That raised my curiosity to look on the internet at some of the better known AI Resorts (Fanatsy, CoCoView, Anthony's Key, Bay Islands Beach Resort, Inn of the Last Resort).
I know it's a little like apples and pears, but for July, looking at their websites (a few AI's), here's what I found for 7 Nights/Meals/Diving...
FIBR $950 single, $800 double
CCV $899 per person (if you demand single, add $350, or get a room mate, maybe)
AKR $1160-1500 double, $1335-1675 single (on the low end rooms)
BIBR $990-1100 dbl, 1190-1300 single
IoLR $995 single, $795 dbl
Just some data. I'd call any resort you are interested in and ask for the best rates. You never know!