Blender is awesome and I find that it works brilliantly once you figure out the kinks, and there are a few especially where UE4 is concerned. As far as buying software on Ebay goes - I’d be very wary of super cheap deals on ‘new’ software. On more than a few occaisions I’ve paid for something like that and gotten a copied and cracked version (they did a decent job of reprinting the labels on the discs though).