About Shareable Costco Items
Not every Costco product is eligible for our Split Multipack program—and that’s intentional. The items listed on this page are Shareable, meaning they are well-suited for groups who want to buy the full bulk product and divide it among themselves using the Grocery Sharing Calculator.
Sharing Items - Automatic Cost Calculations
The Grocery Share Calculator calculates costs only for the items and quantities each participant selects for themselves.
For Shareable Items, the full Costco item is purchased as-is. Participants may coordinate who takes leftover portions using item notes, but the calculator does not automatically divide or assign portions of a bulk item unless those portions are entered explicitly.
For Split Items, pricing is already standardized per unit. Each participant selects the exact number of split units they want, and the calculator totals those selections automatically.
What is calculated automatically:
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Individual subtotals based on selected items
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Proportional allocation of estimated sales tax, delivery, service, and tip fees
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A clear total owed per participant
No spreadsheets. No assumptions. No forced allocations.
Cost Calculation Transparency
Co-Op Shopper separates how items are offered from how costs are calculated.
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Shareable Items are coordinated by the group and tracked for transparency.
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Split Items are pre-defined, individually priced, and calculated per unit.
The Grocery Share Calculator never assumes how an item should be divided. Each person pays for exactly what they select, and any sharing arrangements are handled by the group—not guessed by the system.
This keeps the process simple, fair, and predictable—whether you’re sharing a full Costco multipack or selecting individual split units.
How Sharing & Split Item Shopping Differ
Split item shopping and shareable items serve different needs. Split items allow customers to purchase a single, individually packaged unit from a Costco multipack—ideal for trying a product or buying only what you need without committing to bulk.
Shareable items, on the other hand, are purchased as full Costco-sized items and are best suited for families, groups, or events, where the cost can be shared among participants. Both options provide flexibility, but split items focus on convenience and portion control, while shareable items deliver the best value when buying in bulk.
Shareable Item Standards
Some multipacks can be separated into individual units while keeping factory packaging and labeling. These are eligible for Operator-Splittable Sharing.
If a multipack does not have factory-labeled inner units, it may still be eligible for Group-Managed Sharing—the order is delivered as a full multipack, and your group divides items after delivery. The Sharing Calculator can still split costs either way.