A system and method for operating a bundle-type checkout system incorporating subscription tiers, comprising a subscription manager that assigns subscription tiers to merchants, an offer manager that receives price offers from consumers and analyzes offers to compute bundle offers, a threshold calculator that calculates price discount thresholds and compares price discount values to offer values, and a discount optimization manager that calculates price discounts and determines acceptability of price offers, and a system and method for weighted discount distribution among subscription tiers.