I don't know if removing a plugin from the store would make it not work or not, but if it does is there anyway to get around this so it will work.
I did notice though there was a Gif Pro but the price seems a little steep to me...$199 I know it takes skill to program this stuff but you would think the programmers would keep their prices reasonable so the would make some good money on selling multiple copies in stead of making very little just selling one or two copies.