Could also happen - that figure has dropped significantly in value can be picked up for about $100. But I think there's no driving factor to pick up a goblin. It's a forgettable character for most people (most fans of the Maguire Spiderman series would have preferred a Doc Ock and/or Venom anyway I think)
The thing with these Avengers releases is that there is a completist factor. People might pass on some now and may have 4 or 5 of the Avengers sitting on their shelves and then they might be like 'oh man my Avengers would be complete if I had picked up that Nick Fury or Hawkeye when it was released'...and by that time for many they might not be available for retail.
It's all speculation at this point of course. Impossible to predict what the market may look like a year from now. In general most hot toys are losing value because of lots of different reasons. But that's another topic being discussed in another thread!