Depends on where you're at in the country. If you live in a state that sees lots of cold and wet weather, you can easily get $1000 plus. Here in the Pacific Northwest I paid $1200 for my hardtop, which is about the going rate. But again, it rains all the time up here, it's cold, and crappy weather.
If you lived in a warm state like California, my guess is that they don't go for nearly as much down there (because who is going to use it when you have that nice weather?).