He is looking for a reseller account.
You have quite a lot of space for the amount of bandwidth Pablo, most companies will usually offer a plan with either less space or more bandwidth unless you ask for a custom plan
Host quote is a good option and so is doing some searching here on WHT. Lots of good Hosters here and the 'Web Hosting Offers' section might help as well. Once you have your list of potential new Hosters, start shooting off eMails and go from there.
• PotentProducts.com - for all your Hosting needs
• Helping people Host, Create and Maintain their Web Site
• ServerAdmin Services also available