Proper: ₹2,798 — that Sukoon plus a Boond at ₹899 for the bedroom. This is the one to buy.
Generous: ₹3,798 — two Sukoons, one per room.
Running cost: roughly ₹999 a year. A 100ml refill covers a two-room 1BHK run a few evenings a week for a little over twelve months.
2. ₹1,899 is a complete setup, not a deposit. The Sukoon ships with three 15ml Hotel Collection fragrances of your choice. At the 15ml price of ₹299 each that is ₹897 of scent in the box, and 45ml is most of a year for one machine.
3. ₹3,798 buys two Sukoons, and it is not wrong. It is simply more than a 1BHK bedroom needs. Buy it if your bedroom is over 150 sq ft, or if you want the remote and the timers on both machines.
4. The recurring cost is one bottle a year. Roughly ₹999. Two machines, a few evenings a week, work through about 80–90ml of fragrance in twelve months — one 100ml refill. That is around ₹83 a month for a whole flat that smells of something.
5. Buy the bigger bottle once you know your scent. A 15ml is ₹299, which is about ₹20 per millilitre. A 300ml is ₹1,799, which is about ₹6. The 15ml is for deciding; the 300ml is for living.
Made in India, composed by an ISIPCA Versailles-trained perfumer — and a portion of every order supports girl-child education through Nanhi Kali.
Why the hardware is the small problem and the fragrance is the small bill
The instinct when pricing a scented home is to fear the consumable. Printers taught us this: cheap machine, ruinous ink. So people either overbuy hardware or avoid the category entirely. Neither is right here. A 1BHK done properly is ₹2,798 of machinery that you buy once and never again — the Sukoon and the Boond are simple ultrasonic devices with a plate, a fan and a tank, and there is nothing in them that expires. Against that, the fragrance you will get through in a year at real household usage is one 100ml bottle at ₹999 — twelve months of a composed-smelling flat for one restaurant evening.
What distorts the estimate is that people picture the machine running constantly, because the specifications invite it — 16 to 18 hours a fill sounds like an instruction. It is not. Nobody in a 550 sq ft flat runs a diffuser for eighteen hours; you run it for an hour or two when you come home. At three to four drops a session, a 15ml bottle holds roughly three hundred drops, and the sums stop looking frightening very quickly. The second thing that distorts it is the assumption that the bedroom needs an equal machine. It does not. A 1BHK bedroom is usually 100 to 140 sq ft with the door shut, which is exactly what a ₹899 Boond is rated for, and a bedroom wants less scent than a living room anyway. That single decision is the difference between ₹3,798 and ₹2,798, and it costs you nothing in results.
The three decisions that set your budget
SOSA Sukoon₹1,899If your bedroom door genuinely stays open — no AC, no light sleeper, no shift worker — the flat behaves as one large air space and a single Sukoon at ₹1,899 will carry it. If the door shuts, and for most people it does the moment the AC goes on, the bedroom is a separate volume that receives nothing from the living room and you are buying two machines. That is the entire budget question, and it is answered by watching your own door for a week rather than by measuring your flat.Every line item, priced
The complete price list for a 1BHK, separated into what you buy once and what comes back. Drop counts assume a standard dropper at roughly 0.05ml — sensible estimates, not laboratory figures.
| Line item | Price | What it actually buys | How often you buy it |
|---|---|---|---|
| Sukoon 500ml — living area ★ | ₹1,899 | 270–320 sq ft · 16–18 hrs low · remote and timers · 3 × 15ml scents in the box | Once |
| Boond 300ml — bedroom ★ | ₹899 | Up to 150 sq ft · about 6 hrs a fill · USB and a colour night light | Once |
| Hotel Collection 15ml | ₹299 | ~300 drops, or roughly 75 evening runs at four drops · about ₹20/ml | Only to try a new scent |
| Refill 100ml | ₹999 | ~2,000 drops — a little over a year across both machines · about ₹10/ml | Roughly once a year |
| Hotel Collection 300ml | ₹1,799 | ~6,000 drops · about ₹6/ml, the cheapest way to own a scent you have already chosen | Every few years |
| Pack of 7 · all seven in 15ml | ₹1,799 | Every scent in the range at once — a way of deciding, not a way of stocking up | Once, if at all |
| What is not on this list: a Megh at ₹3,499 covers 215 sq ft, which is less than a Sukoon — it is a 100-hour tank for one dry room, never a coverage upgrade. And a Vaayu at ₹11,999 or Aangan at ₹25,999 are waterless machines that run neat oil and cannot take the water-based Hotel Collection at all. | |||
Sukoon · the living area₹1,899Shop → 
Boond · the bedroom₹899Shop → 
Refills · the only repeatFrom ₹999Shop →
How fast you actually get through fragrance
Start with a realistic picture of use, because every running-cost estimate lives or dies on this. A typical 1BHK evening is the living-room machine on for an hour or two when you get home, perhaps five evenings a week, at three to four drops a session. The bedroom machine goes on forty-five minutes before you sleep, three or four nights a week, at two to three drops — less, because the room is smaller and you are lying still in it. Add that up and you are using around thirty drops a week across both rooms.
Turn that into millilitres. A dropper drop is around 0.05ml, so thirty drops a week is about 1.6ml, which is roughly 80 to 85ml over a year for the whole flat. One 100ml refill at ₹999 therefore covers a two-room 1BHK for a little over twelve months. Put differently: the three 15ml bottles that arrive with the Sukoon are 45ml, which will carry the living-room machine on its own for the better part of a year before you buy anything. If you run both machines harder — daily, longer sessions, six drops — halve those figures and you are still under ₹2,000 a year for a scented flat.
Two economies worth knowing. First, the bottle size genuinely matters: at ₹299 for 15ml you are paying about ₹20 a millilitre, at ₹999 for 100ml about ₹10, and at ₹1,799 for 300ml about ₹6. Buy small while you are deciding and large once you have decided. Second, the commonest way to waste fragrance is not overdosing but bad placement — a machine standing in the draught of a fan or a split AC pushes its output into one wall, and you compensate by adding drops. Move it before you add more. Use filtered water in hard-water cities, rinse the tank when you change scents, and never put raw essential or carrier oils in an ultrasonic machine.
The three budgets, with the totals checked
Three honest ways to spend money on a 1BHK, from the cheapest thing worth doing to the version with no compromises in it. Every total below is the sum of the line items beside it.
| Setup | What you get | Covers | Total |
|---|---|---|---|
| Entry | Sukoon ₹1,899 — three 15ml scents included | Living area, 270–320 sq ft. Bedroom gets nothing with the door shut. | ₹1,899 |
| Proper ★ | Sukoon ₹1,899 + Boond ₹899 | Both rooms — living area and a bedroom up to 150 sq ft | ₹2,798 |
| Generous | Two Sukoons ₹1,899 × 2 — six 15ml scents included | Both rooms, timers and remotes in each, headroom for a large bedroom | ₹3,798 |
| Testing it | Boond ₹899 + one 15ml ₹299 | One room, up to 150 sq ft — the cheapest honest answer | ₹1,198 |
| Year one, proper | Sukoon ₹1,899 + Boond ₹899 + a 100ml refill ₹999 | Both rooms for twelve months, fragrance included | ₹3,797 |
| Year two onward | One 100ml refill ₹999 — or a 300ml ₹1,799 for several years | Both rooms, a few evenings a week | about ₹83/month |
Versailles
The question I am asked about budget is almost never "how much does it cost" — it is "how much does it keep costing". People have been trained by razors and printers to expect the trap. There is no trap here, and I would rather say so plainly than let the worry stop someone buying a ₹899 machine.
Where I do think money gets wasted is at the top of the range. Someone with a 550 sq ft flat writes to ask whether they should look at the commercial machines, and the answer is no — those run neat oil, cannot take the water-based Hotel Collection at all, and are built for lobbies. Equally, I would rather you did not buy a Megh for a 1BHK expecting more coverage; it covers less than a Sukoon and costs nearly twice as much. It earns its price in a very dry room where you want a hundred hours of runtime, and nowhere else.
So the whole budget, honestly: ₹2,798 once, then about a thousand rupees a year. Buy the 15ml sizes while you are working out what you like, and move to a 300ml when you know — the per-millilitre difference is threefold and it is the only lever in the running cost worth pulling. A portion of every order funds a girl's classroom through Nanhi Kali.
Frequently asked questions
- Best two-diffuser setup for a 1BHK — why the second machine can be a Boond.
- Boond vs Sukoon for a 1BHK — which machine belongs in which room.
- Complete diffuser buying guide for a 1BHK — every decision in one place.
- How much do diffuser refills actually cost per month? — the running-cost maths in full.
- Brand: the SOSA founder story.
SOSA products & prices (verified August 2026): Hotel Collection water-based ultrasonic diffuser fragrance 15ml ₹299 · 100ml ₹999 · 300ml ₹1,799 · Pack of 7 (15ml, all fragrances) ₹1,799; refills 100ml from ₹999. Seven scents: The Ritz-Carlton-inspired (white tea · bergamot · cedar), Westin-inspired (white tea · aloe · cedar), 1 Hotels-inspired (cedarwood · vetiver · green leaves), The St. Regis-inspired (amber · violet · woods), Shangri-La-inspired (jasmine · green tea · white tea), Four Seasons-inspired (citrus · floral · sandalwood), W Hotels-inspired (citrus · pepper · amber). Diffusers: Boond 300ml ₹899 · Sukoon 500ml ₹1,899 · Megh 6L ₹3,499. Water-based, phthalate-free, composed to IFRA standards for home diffusion; 3–6 drops per tank. Made in India, Pune. The Hotel Collection scents are SOSA's own interpretations inspired by the world's finest hotels; all hotel names are trademarks of their respective owners and are used only to describe the scent style — SOSA is an independent Indian fragrance house, not affiliated with or endorsed by any hotel brand. Prices and availability subject to change — see the live product pages.