A larger pack can cost more at checkout while costing less for each replacement head. To compare like for like, divide the price of the complete set by the number of heads included, then check the model, colour and original retail-pack contents.
The tables below use BrushHead prices checked on 23 September 2026. All prices are in Australian dollars, include GST and include delivery within Australia. Unit costs are rounded to the nearest cent. Savings compare our listed set prices for the same model and quantity of heads; they are not comparisons with manufacturer RRPs or other stores.
Gentle Care, Radiant White, G3, C3 and W2
The following prices apply to Oral-B iO Gentle Care and Radiant White, and Philips Sonicare G3, C3 and W2. Each original retail pack contains four heads.
| Total heads | Complete retail packs | Set price | Approx. per head | Saving compared with buying that many four-head sets |
|---|---|---|---|---|
| 4 | 1 × 4 | A$33.99 | A$8.50 | — |
| 8 | 2 × 4 | A$58.99 | A$7.37 | A$8.99 |
| 12 | 3 × 4 | A$85.99 | A$7.17 | A$15.98 |
| 16 | 4 × 4 | A$110.99 | A$6.94 | A$24.97 |
For example, four separate four-head sets would cost 4 × A$33.99 = A$135.96 at these prices. The sixteen-head set costs A$110.99, a difference of A$24.97. This comparison includes the same free Australian delivery in both cases.
Philips Sonicare W3 Premium White
W3 has its own price schedule. Its larger sets are also made up of complete four-head retail packs.
| Total heads | Complete retail packs | Set price | Approx. per head | Saving compared with buying that many four-head sets |
|---|---|---|---|---|
| 4 | 1 × 4 | A$42.99 | A$10.75 | — |
| 8 | 2 × 4 | A$79.99 | A$10.00 | A$5.99 |
| 12 | 3 × 4 | A$110.99 | A$9.25 | A$17.98 |
| 16 | 4 × 4 | A$143.99 | A$9.00 | A$27.97 |
The largest set has the lowest unit price among the W3 quantities shown, but also the highest upfront cost. Check the current W3 product page before ordering.
Oral-B iO Ultimate Clean: eight-head retail packs
Ultimate Clean is the exception to the four-head pack format in our catalogue. Its original retail packs contain eight heads, and we do not split them.
| Total heads | Complete retail packs | Set price | Approx. per head |
|---|---|---|---|
| 8 | 1 × 8 | A$58.99 | A$7.37 |
| 16 | 2 × 8 | A$110.99 | A$6.94 |
The sixteen-head set is A$6.99 less than two eight-head sets at the listed prices. Four- and twelve-head Ultimate Clean sets are not offered. View Ultimate Clean options.
When does a larger set make sense?
A larger set is worth considering when you already know the correct model and colour, expect to keep using a compatible handle, and prefer to buy several complete packs together. If you are still choosing between designs, a smaller available set keeps the initial spend lower.
For a household, work out how many people actually use the same fitting before comparing quantities. Do not assume an Oral-B iO head will fit another Oral-B family, or that every Philips handle takes the standard Sonicare head. Our compatibility guide helps you start that check. Each person should use their own head.
Check the order quantity, not just the photograph
Each listed set contains one model in the selected colour. A sixteen-head set is not automatically a mix of black and white, and it does not include different head designs unless the listing explicitly says so. The image may show one original retail pack; the option you choose specifies the total number of heads supplied. Toothbrush handles and chargers are not included.
Prices and availability can change. Use the live Oral-B iO collection or Philips Sonicare collection for current options. Read the linked product and returns information before ordering, particularly if you have not used that fitting before.