TravelTalkOnline Forums Travel and Vacation Forums St. Maarten - St. Martin Beware When Changing a Refundable Ticket

I bought a partially refundable ticket on JetBlue last fall. I've checked prices, and it has dropped TWICE. Each time I've rebooked and banked the credit. It's partially refundable in that I opted for the middle tier ticket that allows a voucher, but not a refund of $.

EDIT: And my $700 ticket is now $470!