Selling and marketing
How to Price Sourdough Starter: Jar Cost and Margin (2026)
A jar by jar way to price starter that covers ingredients, your time, and the $20 monthly cost of your shop.
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Once you know how to price sourdough starter, the number on the jar stops being a guess. You can point to the flour, the jar, the label, your hours, and the flat cost of running your shop, and show why the price is what it is.
What to remember
- Cost one full jar, not just the flour and water.
- Pay yourself for feeding, filling, labeling, and messages.
- Spread the $20 Brevl fee over the jars you expect to sell this month.
- Check the margin after every cost, not before.
Start with the cost of one jar
Pull your last grocery receipt and your packaging receipt before you open a spreadsheet. A jar of starter is mostly flour and water, but the jar, lid, label, and the time you spend feeding and packing are real costs too. Build the cost from the jar you hand over, not from a full batch.
Price the flour and water you use
Write down what you paid for the flour and water that go into one jar. Use your receipt, not a guess.
Add the jar, lid, and label
Add the full cost of the container and label. If you buy in packs, divide the pack price by the number of jars.
Count your feeding and packing time
List the minutes you spend feeding, filling, labeling, and answering messages. Multiply those minutes by the hourly rate you choose.
Spread your monthly shop cost
Add fixed monthly costs, such as the $20 Brevl fee, and divide by the number of jars you expect to sell that month.
Set the price and check margin
Add a margin on top of the full cost. Check that the final price still fits what local buyers pay.
Pay yourself before you add profit
Your time is the easiest cost to leave out and the hardest to get back. Decide an hourly rate before you price a jar, even if it feels high at first. Write it down so the same number goes into every batch.
If you trade starter for time, you are not running a business yet. A price that covers ingredients but not your hours means every extra order costs you a Saturday. Add labor first, then add margin.
Spread your $20 monthly shop cost
Brevl costs one flat $20 a month, with no cut of your sales. That fee does not change whether you sell 5 jars or 50, so the cost per jar falls as your batch grows. Divide $20 by the number of jars you expect to sell this month.
If you sell 12 jars, the shop cost is $1.67 a jar. At 24 jars, it is $0.83 a jar. Use the number for the month you are pricing, not a busy month from last spring.
Work a sample jar from cost to margin
Here is a sample, not a market price. Say one jar uses $1.20 in flour and water, a $0.85 jar and label, and 20 minutes of your time at $15 an hour, which is $5.00. You sell 24 jars this month, so the $20 Brevl fee adds $0.83 a jar. Your full cost is $7.88. At $12.00 a jar, your margin is $4.12.
If your price is $8.00, the margin is $0.12. That is not worth a trip to the post office. Raise the price, cut the jar cost, or sell a larger batch so the $20 fee spreads thinner.
Set a price you can say out loud
Pick a price that covers the full cost and leaves a margin you can name. Write one sentence you can say at the market: ‘This jar costs $X because it includes the jar, the label, and my time.’ If you cannot say it without wincing, the price is not ready.
Do not copy a price from a shop with a different jar size. Check the local price for the same size and the same format, fresh or dried. Then decide if you want to compete on price or on the care in your jar. If the label and jar are a big part of your cost, see how to package sourdough starter to sell before you set the next batch.
Mistakes that cost you money
The first mistake is pricing the flour and forgetting the jar. The second is giving your time a zero rate. The third is spreading a monthly fee over a batch size you never sell. Any one of these can turn a full week into a loss.
What to check before you commit to a price
Before you print labels, check your state cottage food rules for selling starter. Rules differ by state, and a price is only useful if you can sell legally. Then check your jar size against the price you plan to charge.
Run the math for a slow month and a busy month. A price that only works at 50 jars is a price that fails in February. If your cost per jar climbs, raise the price or change the jar before you take another order. Use how to calculate cost of sourdough starter per week to keep the feeding cost current.
For a second view of the same math, see how much to sell a sourdough starter for. If you are still choosing where to sell, read how to sell sourdough starter before you set your first price.
- Make sourdough starter to sell and track the cost per jar
- Dehydrate sourdough starter to sell and price the dry version
Common questions
Should I price a starter jar by weight or by jar?
Price by the jar you hand over, then check the weight so two jars look the same. A larger jar needs a higher price because it holds more starter and often a bigger container. Keep one jar size for your first month so the math stays simple and your buyers know what they get.
Do I have to pay myself for feeding time?
You do not have to write yourself a paycheck, but the price should include a labor cost. Pick an hourly rate, count the minutes per jar, and add that number to the cost. If the final price is too high for your market, change the jar size or the process rather than hiding your time.
How do I split the $20 Brevl fee across jars?
Divide $20 by the number of jars you expect to sell in that month. If you plan to sell 12 jars, the fee is $1.67 a jar. At 24 jars, it is $0.83. Use your own expected count, not your best month ever.
What margin should I add to a starter jar?
Pick a margin you can explain and repeat. A margin is what is left after ingredients, packaging, labor, and overhead, not what is left after flour alone. If the margin is too thin to cover a remake or a gas trip, raise the price or lower the jar cost before you take more orders.
Can I charge more for a dehydrated starter?
You can price a dried starter differently if the jar, label, and time are different. Cost that version on its own, including the drying time and the packet. Do not add a premium just because it is dried. The price should follow the work and the packaging, not the label alone.
This is general information for pricing and bookkeeping, not legal, tax, or financial advice. Check your state cottage food rules and talk to a tax professional about your own sales.