Free decision tools for ecommerce sellers
Know whether the product, price, platform, or ad plan is worth it.
SellerDecide turns ecommerce numbers into a verdict and a next action, so you can stop guessing before you spend more on inventory, discounts, or ads.
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Start with the decision
Choose what you are trying to decide, not which formula you think you need.
Enter the product once
Your price, costs, platform, and volume carry forward into the next check.
Follow the next action
Each result points to the next decision that protects margin or reduces risk.
What are you trying to decide?
Start with the business question. The tools will carry your product data forward.
Validate a product
Start with one product and find out whether the economics are strong enough to keep going.
Set a safer price
Find the price floor, test a discount, and protect your target margin before you publish.
Decide if ads can work
Translate margin into CAC, ROAS, and scale limits before increasing spend.
Plan inventory and offers
Check bundles, shipping thresholds, and reorder timing after the product starts moving.
All Tools
Is This Product Worth Selling?
Calculate true profit including every hidden cost.
What's the Best Price?
Find your optimal price, then test what a discount does.
Which Platform Should I Sell On?
Compare Shopify, Amazon, Etsy, and eBay side by side.
How Much Can I Spend To Acquire A Customer?
Know your maximum CAC before you spend a dollar on ads.
Can I Afford To Run Ads?
Find your break-even ROAS before you launch a campaign.
Can I Scale This Product?
Know exactly how much you can safely increase ad spend.
Should I Bundle These Products?
See if bundling actually increases your profit.
What Should My Free Shipping Threshold Be?
Calculate the number that protects your margin.
When Should I Reorder Inventory?
Never stock out, never freeze cash in excess inventory.
Should I Launch This Product?
Validate margin, competition, and demand before you invest.