I have, in the past bought ANY pin i've stumbled across no matter what it was. Lately though I have been a LOT more selective and only bought games i played a lot back in the day and enjoyed.

My collection is about to be downsized yet again due to changing circumstances, first ones to go are games bought based on only having played them once and i got them just because they were there to be had at the time....

Black Pyramid
Flash, and
Universe (Zaccaria) are all set to be sold off asap.