Bundle deal calculator
Does a 3-for deal or a case discount still make money?
Showing for United States
Price per item in the deal
—
- What the customer saves on the bundle
- —
- Your profit on one bundle
- —
- Your profit on the same items sold singly
- —
- Discount (% off the single price)
- —
- Extra sales the deal needs to earn the same (%)
- —
- Bundles a week that earn what your single sales do
- —
- Extra items a week that means selling
- —
Profit here is the price less what the items cost you. Costs that stay the same however much you sell, such as a stall rent, are left out.
Sales to match are counted in whole bundles or cases, because a customer cannot buy part of one. The extra items are those deals, item by item, less the single items you sell now.
To see a price and cost as a margin or a markup, use the markup and margin calculator.
Case price
—
- Price per item in the deal
- —
- What the customer saves on the case
- —
- Your profit on one case
- —
- Your profit on the same items sold singly
- —
- Extra sales the deal needs to earn the same (%)
- —
- Cases a week that earn what your single sales do
- —
- Extra items a week that means selling
- —
The case price is rounded up to the cent, so the discount is never more than you meant.
Profit here is the price less what the items cost you. Costs that stay the same however much you sell, such as a stall rent, are left out.
Sales to match are counted in whole bundles or cases, because a customer cannot buy part of one. The extra items are those deals, item by item, less the single items you sell now.
To see a price and cost as a margin or a markup, use the markup and margin calculator.
Enter your numbers to see the result.
Planning a farm stand, a CSA or a shop? TallyTill is free to start.
Get started with TallyTill for freeUse this calculator in an AI chat
You can ask Claude, ChatGPT or another AI app to work this out for you, and this calculator opens right inside the chat. You connect TallyTill to your AI app once. It is free, and there is no account and no sign-in.
AI apps call add-ons like this connectors, apps or MCP servers. They all mean the same thing: a way for the AI to use a tool someone else made.
1. Copy this address
2. Add it to your AI app
Claude (claude.ai and the Claude desktop app)
- Open Customize, then Connectors.
- Press + Add, then Add custom connector.
- Name it TallyTill calculators, paste the address and press Continue.
- Under Authentication choose No sign in, then press Add.
- In a new chat, press + at the bottom left, choose Connectors and switch TallyTill calculators on.
On Claude's free plan you can add one custom connector.
ChatGPT
- In Settings, turn on Developer mode. OpenAI moves this switch from time to time; it is usually with the settings for apps and connectors.
- Add a new connector (ChatGPT may call it an app), paste the address and choose No authentication.
- In a new chat, choose TallyTill from the tools menu, or type @ and pick it.
Not every ChatGPT plan lets you add your own connector. If you cannot find the option, your plan may not include it.
Using another AI app? Look in its settings for MCP, add the address as a remote server, and choose no sign-in.
3. Ask your question
Say "use TallyTill", so the AI uses the calculator instead of doing the sum itself. For example:
"Use TallyTill: Does a 3-for deal or a case discount still make money?"
What you will see
- The calculator opens in the chat with the numbers you gave already filled in. Change any number and the answer updates.
- If a number is missing, the box is highlighted, or the AI asks you for it in plain words.
- The answer links back to this page, so you can check the working.
- The first time, your AI app asks if it may use TallyTill. Choose Allow.
The calculators take numbers only. They never ask for your name, your email or a password.
How this is worked out
The items bought singly cost the single price times the items in the deal. The price per item is the deal price divided by the items. The discount is the difference divided by the single-price total. With a cost, the deal's profit is the deal price less the items' cost, and the same items sold singly make the single price less the cost, times the items. The extra sales the deal needs are the difference in profit divided by the deal's profit. The deals a week that earn what your single sales do are your single sales times the profit on one, divided by the deal's profit, rounded up to a whole deal. For a case discount, the case price is the single-price total less the discount, rounded up to the cent.
A worked example
Example numbers only; use your own. Jam sells at 2.00 a jar and costs you 0.80. A deal of 3 for 5.00 is 1.67 a jar, 16.67 percent off, and the customer saves 1.00. You make 2.60 on the bundle against 3.60 on three jars sold singly, so the deal needs 38.46 percent more sales. If you sell 30 jars a week singly, 14 bundles a week earn the same, which is 12 more jars. A case of 12 at 10 percent off is 21.60.
Nothing you type here is saved.