I too have a Microcenter store in my state but it's like a two hour drive, I'd really have to purchase a lot to justify the time and gas. I do admit Microcenter has got the best prices on cpu's, but they raise the prices on other items to make up for it. NCIX has got the best prices I've seen for hard drives. Newegg has got better prices on motherboards and Amazon is all over the place as far as I can tell. Most pc parts from Wally World are on line only plus you need to throw in some ship charges on some items and there's always taxes to add in on local items. I got my modem at Best buy.
Newegg had a Motorola SB6141 modem on sale for $75. and Best buy had it for $109. I asked for a price match and they did although I had to tell the cashier how to figure the price with taxes included because Newegg did not charge taxes. Although I despise Best buy, in a pinch they are local and they will price match