A vape cart looks expensive at $40–60. An eighth of flower at $30 looks cheaper. But these headline prices don’t tell you much about actual cost — because the useful unit isn’t grams or carts, it’s doses.
When you break cannabis down to cost per session, the comparison between vapes and flower shifts significantly. The pricing layers behind each format — from wholesale costs to retail margin — are explored in more depth in how online cannabis pricing actually works.
How vape carts price out per dose
A standard 1g vape cart contains approximately 800–900mg of usable oil after accounting for hardware waste. At 3–5mg per puff (a reasonable estimate for moderate users), a 1g cart yields roughly 160–300 puffs.
If a moderate session is 3–5 puffs, a 1g cart provides 40–80 sessions. At a price of $40, that works out to $0.50–$1.00 per session.
Half-gram carts at $20–30 price out similarly per dose, though the hardware-to-oil ratio is slightly less efficient.
How flower prices out per dose
An eighth (3.5g) at $30 contains roughly 3,500mg of cannabis. For a pipe or joint, combustion efficiency is lower than vaporization — you typically need more material per session to achieve equivalent effect. A moderate bowl or half-joint uses roughly 0.3–0.5g.
That gives an eighth 7–12 sessions, or $2.50–$4.30 per session at $30 per eighth.
With a dry herb vaporizer, efficiency improves significantly — the same 0.2g in a vaporizer can deliver equivalent effect to 0.4g combusted. This can bring flower cost-per-dose into closer range with vape carts.
The comparison table
| Product | Typical price | Sessions | Cost/session |
|---|---|---|---|
| 1g vape cart | $40–60 | 40–80 | $0.50–$1.50 |
| 0.5g vape cart | $20–35 | 20–40 | $0.50–$1.75 |
| Eighth flower (combusted) | $25–40 | 7–12 | $2.00–$5.50 |
| Eighth flower (dry herb vape) | $25–40 | 14–22 | $1.10–$2.80 |
These ranges reflect typical online pricing. For current prices across products, CannabisDeals tracks live vape and flower pricing across licensed retailers.
Why flower still dominates despite higher per-dose cost
If vapes are cheaper per dose, why does flower remain the dominant cannabis category by sales volume?
A few reasons:
- Lower upfront cost. An eighth at $30 is accessible. A good vape cart at $50 is a larger single purchase even if it’s cheaper per session.
- Effect profile preference. Many users prefer the onset and effect character of combusted or vaporized flower over concentrate-based vape carts.
- Terpene complexity. Whole flower retains a fuller terpene profile than most vape carts, which often use added terpenes rather than strain-native ones.
- Trust. The contents of flower are visible. Vape cart oil composition requires more trust in the manufacturer.
The honest bottom line
On pure cost-per-dose economics, vape carts win in most scenarios — especially if you’re not using a dry herb vaporizer. But cost-per-dose isn’t the only input. Effect quality, convenience, product transparency, and the actual experience matter equally for most buyers.
The best approach: decide which matters more to you — per-dose economy or experience character — and price accordingly.
Browse current vape and flower pricing at CannabisDealsUS.