An improved computerized ecommerce system, optimized for smaller merchants such as florists who often provide seasonal perishable gifts that require local delivery, and who often desire to form cooperative networks with local merchants offering related gift services, as well as other related merchants such as other florists in more distant locations. The web server based system allows merchants to easily set up non-static (time variable) websites that automatically provide schedule driven promotions. New products can be quickly uploaded from smartphones, and sophisticated time and location aware algorithms can compute accurate delivery costs and make such costs transparent to customers. Other participating merchants can be easily added to the system to form local and distant cooperative merchant networks. The system simplifies customer use of promotional offers by cross checking customer URL versus promotion lists. Recipient gift appreciation is optimized by providing interfaces to allow customer designed gift cards and messages.