I don't want to be a massive wet blanket,
but.
back in the day this shelf warmed hard, due to the figures not having 3 modes, and doesn't appear to have been picked up by collectors much. as a result there aren't a huge number of good condition examples around and it tends to be very expensive. if you do a search on ebay, it's a bit scary. I would expect its 'value' to lower as the new studio series one gets in to circulation. but this might not happen for a while.
I wish you luck, and I wish I'd bought ten when they were on clearance at Kmart.