Should I get this?

A wild big zam has appeared:

http://www.ebay.co.uk/itm/Bandai-Gundam-Collection-MA-08-Big-Zam-1-400-Scale-Model-Kit-Gunpla-/131150494931?pt=UK_Collectables_AnimationCharacters_Anime_SM&hash=item1e892dbcd3

Seems pretty rare since the others on ebay cost a bomb. I’m on the fence about it. Do you guys think it will go up much (hopefully not because of any of you)?