Good camera bags that can hold 1 camera and 2-3 lenses?

I have a nikon camera and a bag to match, but it's a simple 1 camera, 1 lens. I received another lens for my birthday and have nowhere to store and carry it. Any good bags? Under $50 preferably.

Less than $40. Go to the link below. Paste it in your internet explorer

http://www.amazon.com/...B002VPE1WK

I use a Swiss Gear back pack.

I can carry two bodies and four lenses as well as all my memory cards, two Nikon electronic flashes and other accessories (ear-plugs, Xrite ColorChecker Passport, business cards, etc).It also holds my notebook computer and 2 tb external drive. $39.99