I buy everything I can over the internet, unless I need something from the hardware store or some small car part etc. Places I buy from often: amazon, newegg, ebay, pondliner.com (way cheaper than my local garden center), pizzahut.com, summitracing.com, mwave.com (until I found newegg), sportsauthority, etc..
I haven't been to a mall since like 1998. The internet was designed for antisocial people like me