Fragrance, monthly: about ₹36 per machine at four drops a tank, one fill a day, buying 300ml at ₹1,799 — roughly ₹6 a millilitre.
The whole 2BHK: ₹3,798 in year one plus ₹864 of fragrance, then ₹72 a month after that.
2. Fragrance, monthly, and it is small. A 300ml bottle is ₹1,799, which is about ₹6 a millilitre. At four drops a tank — roughly 0.2ml — and one fill a day, a machine gets through about 6ml a month. That is about ₹36 per machine per month.
3. So year one is the expensive year, by a wide margin. A 2BHK costs ₹3,798 of machines plus ₹864 of fragrance in the first twelve months — about ₹389 a month. From month thirteen it drops to about ₹72 a month, because you already own everything except the bottle.
4. The Sukoon arrives with fragrance in the box. Three 15ml Hotel Collection scents of your choice come with each Sukoon. Bought separately those are ₹299 each, so ₹897 of the ₹1,899 is fragrance. Day one costs you nothing more than the machine.
5. The line that saves the most is the room you skip. Every machine you do not buy removes ₹1,899 from year one and ₹36 a month forever. Corridors, guest rooms used twice a year and utility areas are the rooms to leave alone — and leaving them alone is not a compromise, it is the correct answer.
Made in India, composed by an ISIPCA Versailles-trained perfumer — and a portion of every order supports girl-child education through Nanhi Kali.
Why a single figure cannot answer this question
The reason nobody gives you a straight price is that two different kinds of spending are hiding inside the question, and they behave in opposite ways. Hardware is capital: large, one-off, and finished the day it arrives. Fragrance is consumption: small, repeating, and open-ended. Quote only the hardware and you look expensive and slightly dishonest. Quote only the fragrance and you look cheap and slightly dishonest. The useful answer is both, kept apart, with a time period attached — which is why every table on this page has a "once" column and a "per month" column rather than one grand total pretending to be an answer.
The second reason is that the hardware number is set by something most people have not decided yet: how many rooms they are actually going to scent. That is not the same as how many rooms they have. A 1,300 sq ft 3BHK contains a living-dining zone, three bedrooms, a kitchen, two bathrooms and a passage — nine spaces if you count doors, and about three worth spending ₹1,899 on. Fragrance does not pass through a closed door, so each closed room is its own separate purchase, and each closed room you decide to leave alone is ₹1,899 saved immediately and ₹36 a month saved for as long as you live there. The budget is therefore decided by a floor plan and a bit of honesty about where you spend your evenings, long before it is decided by a price list.
The three decisions that set your bill
SOSA Sukoon₹1,899Count air spaces, not square feet. An open living-dining-kitchen is one space and takes one Sukoon at ₹1,899. Every bedroom whose door is shut is another. So a studio is ₹1,899, a 1BHK is ₹1,899 or ₹3,798 depending on that door, a 2BHK is usually ₹3,798, a 3BHK ₹5,697 and a 4BHK ₹7,596. A Boond at ₹899 is the correct machine for a room under about 150 sq ft — a small second bedroom, a study, a child's room — and swapping one Sukoon for a Boond takes ₹1,000 off the total without costing you anything in that room.What each home type actually costs
Hardware first, since it is the number that decides the rest. Machine counts assume the bedroom doors are shut for at least part of the day, which is what makes each bedroom a separate purchase. Areas are rough and vary hugely by city.
| Home | Roughly | Rooms worth scenting | Hardware, once |
|---|---|---|---|
| Studio / 1RK | 300–450 sq ft | One — the whole flat is one air space | ₹1,899 (1 Sukoon) |
| 1BHK | 450–650 sq ft | One or two, depending on whether the bedroom door shuts | ₹1,899 – ₹3,798 |
| 2BHK ★ | 700–1,100 sq ft | Living-dining, master bedroom — the second bedroom is optional | ₹3,798 (2 Sukoons) |
| 3BHK | 1,200–1,600 sq ft | Living-dining and two bedrooms in daily use | ₹5,697 (3 Sukoons) |
| 4BHK | 1,800–2,500 sq ft | Living-dining and three bedrooms | ₹7,596 (4 Sukoons) |
| Duplex / villa | 1,500–3,000+ sq ft | Bedrooms as above, plus one large connected common volume | Sukoons + Vaayu ₹11,999 |
| Two ways to take money out of this table: swap a Sukoon for a Boond at ₹899 in any room under about 150 sq ft, and buy the machines one at a time rather than all at once — a staged purchase costs exactly the same and stops you buying for a room you turn out not to use. | |||
Sukoon · ₹1,899 a room₹1,899Shop → 
Hotel Collection · ~₹6/ml₹1,799Shop → 
Boond · the small room₹899Shop →
Working out your own monthly figure in three lines
Start with millilitres, not rupees. A drop from a dropper bottle is roughly a twentieth of a millilitre — twenty drops to the millilitre is the usual figure — so the recommended three to six drops a tank is somewhere between 0.15ml and 0.3ml. Call it 0.2ml a fill at four drops, which is where most people settle once the novelty wears off. One fill a day is 6ml a month. Two fills a day at six drops is 18ml a month. Those two figures bracket almost every household in India, and everything else follows from them.
Then convert. The Hotel Collection costs about ₹6 a millilitre in a 300ml bottle at ₹1,799, about ₹10 in a 100ml at ₹999, and about ₹20 in a 15ml at ₹299. So one machine run modestly is about ₹36 a month on a 300ml, ₹60 on a 100ml, ₹120 on 15ml bottles. Run hard — two fills a day, six drops — it is about ₹108 a month on a 300ml. Multiply by your machine count and you have the whole recurring bill: three machines run modestly is about ₹108 a month, three machines run hard is about ₹324.
Then check it against how long a bottle lasts, because that is the sanity test people actually feel. At 6ml a month, a 300ml bottle is the better part of four years for one machine, or about seventeen months across three. A 100ml at ₹999 is roughly sixteen months on one machine. A 15ml is around two and a half — which is exactly right for testing a scent and exactly wrong as a standing order. In practice you will change fragrance before you finish a 300ml, and that is fine; it means the constraint on this hobby is your taste, not your budget.
The full budget, itemised and totalled
Hardware, fragrance for a year, and what that comes to a month in year one and every year after. Fragrance is costed at four drops a tank and one fill a day per machine, bought as 300ml bottles at about ₹6 a millilitre.
| Home | Hardware, once | Fragrance a year | Per month, year one |
|---|---|---|---|
|
Studio 1 Sukoon |
₹1,899 | 72ml ≈ ₹432 | ₹2,331 ÷ 12 = ₹194 |
|
1BHK Sukoon + Boond |
₹1,899 + ₹899 = ₹2,798 | 144ml ≈ ₹864 | ₹3,662 ÷ 12 = ₹305 |
|
2BHK ★ 2 Sukoons |
₹3,798 | 144ml ≈ ₹864 | ₹4,662 ÷ 12 = ₹389 |
|
3BHK 3 Sukoons |
₹5,697 | 216ml ≈ ₹1,296 | ₹6,993 ÷ 12 = ₹583 |
|
4BHK 4 Sukoons |
₹7,596 | 288ml ≈ ₹1,728 | ₹9,324 ÷ 12 = ₹777 |
|
Year two onward fragrance only |
₹0 — already bought | Same as above | ₹36 a month per machine |
Versailles
People arrive at this question braced for a subscription. They have been trained by printer cartridges and coffee pods to assume the machine is bait and the refills are the trap. That is not the shape of this category. The machines are the expensive part, they are bought once, and the fragrance costs less per month than a single cup of filter coffee in a Pune café.
What I would rather people worried about is machine count. Every extra machine is ₹1,899 that does not come back and a small permanent addition to the monthly line, and the fourth or fifth one is almost always bought for a room nobody sits in. I have talked more customers out of a machine than into one, and the flats that end up smelling best are consistently the ones with fewer, better-placed units.
So work it out in this order: which rooms, then how many machines, then one good bottle to share between them. Three drops, one fill a day, and a 300ml that will outlast your interest in the scent. A portion of every order funds a girl's classroom through Nanhi Kali, which is the one line in the budget I would not cut.
Frequently asked questions
- How much do diffuser refills actually cost per month? — the millilitre arithmetic in full.
- The cheapest way to scent a whole flat properly — where cutting cost genuinely works.
- How to scent your home for under ₹10,000 — itemised builds at that ceiling.
- The complete SOSA home scenting buying guide — every home type, every budget.
- 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.