1. Watch for Promo Codes

A few letters and numbers can make a big difference when shoppers hit the checkout section. Promo codes can often be spotted on Lensmart.com offering savings like 25% off the customers' first orders plus free shipping.

2. Shop and Save

Savings is really just that simple with Lensmart. Each eligible product that shoppers buy banks a 5% credit. The program is free of charge, and shoppers are automatically enrolled for these special savings the moment they make a purchase. Lensmart.com's partner sites drugstore.com and beauty.com also offer 5% back.

3. Enjoy Free Shipping

Shipping doesn't cost a thing for orders that meet or exceed a $50 minimum. Free standard shipping will be applied to shoppers' carts at checkout for every order that reaches $50.