Wow! $528 seems like a dream. We're looking at Columbus OH to STT first week of April. Delta flights are upwards of $900 right now. Ouch!
Wall Street Journal had an article last week that the best time to buy tickets to the Caribbean is 77 days from departure. Seems to be cutting it kinda close.
We may book now with frequent flier miles and then watch and see if the rates come down. We can always put the miles back in the kitty if we see a good rate.