Early accessCommerce · ShopifyCarboy
Sell every size from one bottle, sack or drum.
Pooled inventory for Shopify shops that buy in bulk and sell by the portion — decants, tea, coffee, spices and refills.
Early access — join from the Carboy website.
Why we built it
A 2 ml sample, a 5 ml decant and a 10 ml travel size all come out of the same 100 ml bottle, but Shopify counts each size on its own. Carboy keeps the bottle, sack or drum as one pool, so every size’s stock is worked out from what’s left in it.
What it does
One pool
Link all your sizes to the bulk container they’re poured from.
Stock that follows every order
Each sale draws down the pool, refunds and cancellations put it back, and every size follows.
Hand edits wait for you
If someone changes stock by hand in Shopify, Carboy holds the number and asks you first.
Cost and margin per size
See what every size costs you and the margin it earns.
Lives inside Shopify
Works inside your Shopify admin, next to your products and orders.
Made for portion sellers
Decants, tea, coffee, spices, refill stores — anything sold by weight or volume: ml, g, oz, lb.
Inside the app
Pool detail with cost and margin per size 
Hand edits wait for your decision 
The Carboy website
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