A supported volume record
The viewed 541204 front states six bottles of 2 fl oz 59 mL each. The 551310 front states three bottles of 8 fl oz 236 mL each. Count times declared per-bottle fluid volume gives 12 and 24 fl oz per selected kit. These are labeled purchase quantities,not independent measurements of fill or usable paint.
The exact arithmetic
At 7.89 USD,the 12-fl-oz project set is 0.6575 USDper fl oz. At 12.49 USD,the 24-fl-oz fingerpaint set is about 0.52042 USDper fl oz. The tool displays rounded rates but keeps the complete-offer price in integer cents. Do not reconstruct a payment total from a rounded rate.
Keep printed rounding attributed
The fingerpaint front's 236 mL is retained rather than replaced with a familiar 237 mL conversion. Likewise,the project bottle's 59 mL is source wording. We do not use small differences in rounded dual units to claim a measured shortage or derive precise density.
Exclude shipping weight
A retailer's shipping-weight field includes packaging and may itself be inconsistent. It is not the product's net mass. Neither a shipping pound value nor an unqualified ounce heading can replace a clear fluid-volume declaration. No grams-per-milliliter assumption is used.
Limits of the rate
A cheaper fluid ounce does not establish equal coverage,color strength,cleanup or suitability between project paint and fingerpaint. They have different intended formats. The watercolor record returns unsupported for fluid volume. Keep the exact selected offer and actual charges visible alongside any unit rate.
Volume is not coverage
Even when two products both have a fluid-volume declaration,one fluid ounce does not imply the same painted area or number of projects. Formula,application and material differ,and no coverage test was performed. Use the fluid rate to understand purchased liquid quantity while retaining the intended format. If a project depends on covering a defined area,the missing coverage evidence remains unknown rather than being calculated from bottle capacity alone.
Sources & scope
Checked November 5, 2026. Manufacturer and retailer references support the specific statements. Dated displayed prices are not final checkout quotes, performance rankings or performance testing. This shopping reference does not replace the exact product label or qualified individual advice. Current received labels and independent child-art/chemical-label/content/commerce review remain pending.
Keep reading
What do the three exact US paint offers cost? ↗
Can eight watercolor pans be converted into liquid ounces? ↗