For party supply and souvenir shops
Price party goods and souvenirs with seasons and breakage counted
Balloons, banners and keepsakes sell in waves. Price each item from its buy-in cost and keep your margin through the busy weeks.
Quick answer: how should party supply and souvenir shops price a product?
Add every cost, then the fees that take a share of the price, then choose your margin. For birthday party pack that works out at $13.64, leaving $6.14 profit. Skip a cost and the profit shrinks without you noticing.
Check your best seller in two minutes
Take the product you sell most. If its price was set by adding a mark-up to the buy-in price and you have never counted breakage and shrinkage allowance or leftover-stock allowance, card fees and monthly costs, it may earn less than you think. Some items may even lose money. You will not see it in your till, only in the end-of-month result.
The mark-up trap, worked through
Marking up only the buy-in price by 45% gives a price of $8.12. After the other costs and the fees taken from that price, the sale leaves $1.17, not the $6.14 you planned. The same costs priced properly give $13.64.
Illustration with the example costs below. Your numbers will differ.
Where party supply and souvenir shops usually lose money
Seasonal waves
Save one calculation per season so prices stay right.
Leftover stock
Add an allowance for items that miss the season.
Packs and bundles
Cost a party pack from its parts and price it as one.
Example: Birthday party pack
These costs go in. The price comes out of the same engine the app uses.
- Buy-in price$5.60
- Inbound freight$0.30
- Packaging$0.25
- Card terminal fee2.9% of price
- Breakage and shrinkage allowance3% of price
- Leftover-stock allowance4% of price
- Profit you want45% margin
Sell it for
$13.64
Profit per sale $6.14 on a total cost of $7.50.
What party supply and souvenir shops see in the app
Real screens. Your own costs and products go in, the same kind of answers come out.
A ready cost list
Pick party supply and souvenir shops and the usual cost lines appear. You fill in the amounts.
The exact price
Fees that depend on the price are solved exactly, so the profit you ask for is the profit you get.
Products that lose money
Check a whole price list at once and see which items run thin or below cost.
Already set up for party supply and souvenir shops
Choose this business type in the calculator and these cost lines appear. You only fill in the amounts.
- Buy-in price
- Inbound freight
- Packaging
- Helium or balloon gas
- Printing on custom items
- Card terminal fee
- Breakage and shrinkage allowance
- Leftover-stock allowance
- Event cancellation allowance
- Rent (monthly)
- Staff wages (monthly)
- Insurance (monthly)
- Seasonal extra staff (monthly)
- Storage space (monthly)
- Event hire stock (monthly)
What party supply and souvenir shops get with CostCal Pro
The pricing maths is free. Paid plans add bulk tools and store connections.
Exact selling price
FreeEnter the buy-in price, other costs and fees, choose a margin, and get the price that keeps it.
Catalog check
FreeUpload a product export and see which products lose money or run on a thin margin.
Discount simulator
FreeSee the largest discount that still leaves a profit before you run a sale.
Break-even
FreeAdd monthly costs and see how many sales cover them.
Branded PDF report
FreeSend a clear cost and price breakdown to a customer or partner.
CSV import and typical costs
StarterBring in many products at once and start from ready cost templates.
Store connection
StarterLink calculations to products in your online store by SKU.
Weekly below-cost email
PremiumGet an email when a store product is selling below cost.
Apply prices to your store
PremiumPush approved prices to a connected WooCommerce store.
See plans and prices, all features or a sample report.
Questions party supply and souvenir shops ask about pricing
How do I price birthday party pack?
Add every cost (buy-in price, inbound freight, packaging, card terminal fee, breakage and shrinkage allowance, leftover-stock allowance), then choose the profit margin you want. With these example costs and a 45% margin, birthday party pack should sell for $13.64, which leaves $6.14 profit on a total cost of $7.50. Your own costs will differ, so enter yours in the calculator.
What is the formula for a selling price that keeps your margin?
Price = fixed costs divided by (1 minus the percentage fees minus your margin). Here the fixed costs are $6.15, the percentage fees are 9.9% of the price and the margin is 45%. Percentage fees must be taken from the selling price, not from the cost, which is why a simple mark-up on cost usually leaves less profit than planned.
What costs do party supply and souvenir shops often forget?
The easiest to miss are breakage and shrinkage allowance, leftover-stock allowance, event cancellation allowance, your own time, and monthly costs such as rent, staff wages, insurance. Each one is a row in the Party supplies / souvenir shop preset, so you only fill in the amounts.
How do I know if a product is losing money?
Compare the selling price with the total cost, including the share of the price taken by fees. If the price is lower than that total, the product loses money. Catalog check does this for a whole product export and marks every item that loses money or has a thin margin.
Can I price packs?
Add one line per item and the pack price is solved.
Can I price custom-printed items?
Yes. Add the setup cost per order and the print per piece.
Is the CostCal Pro calculator free for party supply and souvenir shops?
Yes. The Free plan never expires and needs no card. It includes the exact price calculation, 5 saved calculations, 5 PDF reports and a catalog check of up to 50 products. Paid plans start at $49 a year and add more saved calculations, CSV import, store connection and API keys.
Last reviewed 2026-11-11. Example figures are illustrations, not advice.
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