Each gaming mouse will have a DPI range (e.g. 200 – 8,000), and the user can select a point in between that feels comfortable. A very high DPI would be something like 16,000. Most office mice will have a DPI of well below 1,000, by comparison. The majority of gamers will find 800 to 3,000 comfortable, but you can train yourself to cope with higher sensitivities over time.
OriginPC: OriginPC's default design typically won't turn heads, but they are the go-to-guys when it comes to customization. From custom paint jobs, thermal compounds to a TV Tuner, as long as you have the money, the sky's the limit. OriginPC's standard warranty offers lifetime 24/7 tech support and even offers a dead-pixel warranty in case of a defective display.
The SteelSeries Rival is a very solid mouse, but it's also very specialized: I have a feeling if you need this mouse, you know about it already. The key feature of the Rival 500 is the sheer amount of programmable buttons this thing has. With 15 different buttons in tow, it's basically a keyboard replacement! This is a setup that's ideal for games with lots of macros of cooldown skills—think MMOs or even MOBAs.
Dell Home, via its Member Purchase Program, offers its Dell 15.6" Laptop Gaming Backpack in Black/Red for $28.49 with free shipping. That's tied with our expired mention from four days ago as the lowest price we've seen for this bag. (It's the best deal we could find now by $20.) It accommodates laptops with up to 15.6" screens and features a shock-absorbent EVA molded front shield, adjustable shoulder straps, and a deployable rain cover.