I buy a lot of stuff online and have for years...living in the Alaska bush it was ALL we had...I could not afford the $500 to fly to Anchorage every time somebody needed something...and living in a native village meant the stores (3 of them) had to cater to their likes. They are not fond of veggies, so that was a hard one to adjust too..
we bought mainly from Drugstore.com the items that were not cheaper to order in on the barge from Seattle that came twice a year!
and German Deli.com and QVC for special food items, especially at the holidays!
now I do fabric, supplies, German deli, QVC( at the holidays, amazon for books/tapes, some gardening stuff, GNC for my protein stuff(cheaper than the local store at the mall and has a better selection)!
we still live some what rural..so online shopping beats the $50+ it takes in gas to drive to OKC!