How much to replace a tar and gravel roof?

I have a small 1000 square feet house, with roof fairly flat, and I'd like to replace it with a material other than tar and gravel, yet low cost. Thanks.How much to replace a tar and gravel roof?A metal roof and you might not have to remove the old. That would be the cheapest and the metal roof has a great warranty. For more info check link.How much to replace a tar and gravel roof?You probably looking at $ 1200.00 - 2500.00 to replace it