I love Prime; I also have an addiction to 1-Click, so yeah I buy a lot of stuff on Amazon. They also charge my card instantly and the process to prepared for shipment step takes like a minute, so I can't even cancel!
I used to order maybe twice a week and with overnight shipping every time. Now I order like 4-5 times a week. I mean most things are free shipping and tax free (so I buy stuff like shampoo, batteries, CDs); for other stuff I get them overnight.
Prime member for over 5 years and running!
Yeah i only buy from Amazon, i never buy anything in the store except food. I save a whole bunch of money!