Alternative prescription delivery services are everywhere these days. Costco.com, HealthWarehouse.com, and Amazon.com are full-service pharmacies. Others, like ScriptCo.com, Ro.co, HoneybeeHealth.com, GeniusRx.com, and CostPlusDrugs.com, offer mostly generics. Weigh their annual membership fees against the lower prices to see if you'll save. Some drugs cost less than insurance copays, but don’t count toward your deductible.