The question this resource answers
Calculate the unit cost of a stated buy-some-get-some offer from the offer terms you enter. It is written for buyers comparing a multi-box promotion, with the focus kept on multibox bench. The aim is a usable record or calculation rather than another generic product-ranking page.
Gather the inputs before interpreting the result
The worksheet asks for: Boxes paid for; Additional boxes included; Price per paid box ($); Sealed units per box. Keep the relevant package, item reference or source document nearby when completing a field. If the source does not establish a fact, leave it unresolved rather than replacing it with a plausible assumption.
How the working is performed
Multiply paid boxes by price per paid box. Add paid and included boxes to calculate boxes received, then multiply by units per box. Divide total price by total received units.
Work through a concrete case
A hypothetical buy-two-get-one offer at $25 per paid box and 50 units per box costs $50 for 150 units before other charges.
What the result cannot establish
This does not apply promotions, stack discounts, determine eligibility or verify an offer. Review the original item and source before turning a worksheet result into a purchase statement. A calculation can be correct while an input is incomplete, outdated or attached to the wrong product.
Retain a reviewable record
Keep the date, item identity and the source behind any product-specific statement. If you share an output, retain its assumptions and limitations alongside it. Use the interactive tool to reproduce the working rather than presenting an unexplained number or verdict.