I'm sure there folks that have some idea about the cost. However, you need to be aware that such enclosures, while common in Florida, are not very common elsewhere. The cost info you get is likely to be (a) based on pools in Florida and (b) LOWER than YOUR cost will be. The most reliable cost information is going to come from contractors local to you, OR if you go the do it yourself route, your own cost estimates.

Regarding wind ratings, the ONLY reliable info will come from manufacturers, if they have it and will give it to you. I'm skeptical, but would be very interested to see what you find.

After thinking about it a bit myself, the only way I can imagine that you could create a wind rated screen enclosure would be to engineer one with 'break-away' screen panels. I don't think there's any way, with standard screening, that you could keep the screens and the structure in high winds.