Co-buying is a novel online shopping approach that unites buyers in a single purchase to maximize discounts. Groups can join together, lowering prices. Co-buys are time-limited, and as more people join, prices decrease. Users can request products in a price range. The admin reviews demand and may allocate for co-buying, displaying current and best prices. When users join, their payment method is authorized. As prices drop, users can share on social media to attract more participants. The person who brings the most participants may get the product for free. This system optimizes product pricing.

• Co-buying
• Group purchasing
• Online Shopping