How to Use Marijuana Dispensary Deals Without Overpaying
Compare dispensary deals by cost per milligram of THC. Check harvest dates, COA batches, tax rates, limits and stacking rules before you buy.
The price on the menu is a starting point
In every legal US state you stack state excise tax, local cannabis tax, and ordinary sales tax on top of the shelf number. A $35 eighth can land near $50 by the time you tap your card. That gap is the first thing to figure out, because comparing menu prices across two shops in the same city is pointless if one quotes pre-tax and the other quotes out-the-door.
I look for the out-the-door total first. If the menu does not show it, I add my state's rate before I decide anything is a deal.
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What drives the number
Product type
Flower is the cheapest route to THC in almost every market. Extracts and vapes cost more per milligram. Edibles land in the middle once you account for the fact that oral THC hits differently and you cannot dose it the way you dose a joint.
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Unit math beats sticker math
- Flower: compare dollars per gram. A $90 ounce is about $3.20 per gram. A $40 eighth is about $11.40. Same strain, very different value.
- Vapes and concentrates: compare dollars per gram of oil or extract, not per cartridge. Cartridge sizes run from half a gram to a full gram.
- Edibles: compare dollars per 10mg of THC. A $24 package with 100mg works out to $2.40 per 10mg serving.
Tier and brand premium
Most shops run at least three flower tiers: value, mid, and top shelf. The jump from mid to top shelf is often 40 to 60 percent for a modest THC difference. Brand premium is real too. A named grower can add $10 an eighth over an in-house cut of similar quality.
State and local supply
Prices swing hard by state and even by county. Markets with many licensed growers and few retail licenses are cheap on the wholesale side and expensive at the register. Newly opened markets tend to be the priciest. Mature markets with heavy competition push flower prices down until the tax line is the bigger number on your receipt.
Pitfalls to watch
- Comparing pre-tax to post-tax. Ask straight out: is this out the door?
- Chasing THC percentage. A 32% label often costs double a 24% one, and lab testing variance means the gap may not be what the label claims.
- Ignoring packaging weight. Some eighths include the jar or a humidity pack in the net weight claim. Read the label.
- Trusting an online menu as current. Inventory moves, and a price you saw last week may not exist today.
- Buying the biggest jar to save money. Bulk only saves money if you consume it before it dries out.
- Forgetting purchase limits. State caps are measured in product weight and THC, not dollars, and hitting the cap mid-order changes your per-unit math.
How I compare two shops
Pick one product you buy often. Get the out-the-door price at each shop for the same weight and similar THC. Divide by grams, or by 10mg servings for edibles. That single number tells you more than any menu headline. Repeat it once a month, because dispensary pricing in most US markets moves faster than people expect.