The Guardian has a short piece detailing the estimated losses in Caribbean coral cover. It's more than depressing.
Here is a link to reef valuation studies in the Caribbean by WRI.
Pretty soon I'm going to ask everyone to read this report that I put together in 2011, detailing valuation work in the Wider Caribbean Region (warning: big file). It's a huge report, so you can focus your attention on sections 1,2,6 &7.