Fry's Electronics is a great store that offers the only option I know of in Las Vegas for custom PC parts. I come here for my PC build options and they usually have tons of options on parts both new and old. They have many sections of store ranging from movies, books, gadgets, computers, parts, appliances, stereo equipment, and televisions.
One of the biggest complaints I have is many times the product has been opened as is missing parts. I went in and bought a new AMD 8 Core processor and they get it from a locked room that is delivered it to you at purchase. I got out into the car and noticed that the seal was cracked on the box. After opening the processor, I noticed someone must have returned it and they resold it as new. The stickers were missing and worse of all the heat flux was already applied and wiped clean from the processor. One of the many pins on the back were bent and of course I was not going to use this.
I brought the processor back and they didn't question the return. Who knows if they placed it back in sale rotation. You will notice some product open and others product with slightly lower prices with "opened merchandise" price tags.
This store is great as long as you pay attention and unfortunately its the only option in Las Vegas for your PC needs. The place is 100x better than Bestbuy which isn't really saying much.