What kind of SciFi? What Media? Polar lights used to put out alot of models, seaview, LIS Robot.etc. They are still around on the market. Ebay (scifi) (model,kit) for your search.
There are two companys putting out things They are Monarch and Morphise? We are awaiting LIS Rover The LIS rescue pod as well I think monarch? I would look in amazing figure modeler for others. Try comic book shops as well.
Dan B.