If you care about your business you will not take a web host that would do 500 gigs for $30. We have a 350 gig plan for $149 and can balance off the price if you don't need the space and use it for more bandwidth. You can get cheaper but your loss in sales will cost you allot more unless the sites just for fun, then just find the lowest price I guess.
http://www.dwhswebhosting.com/dedicated-plans.htm
Good luck
