You can find them at Toyeast. Prices vary depending on the model. The VStanks were first (micro) the VSTank*R are the newer ones (also Micro) and then the Pro are larger scale - about 16" long. I'm in the middle of trying to find some reviews myself. Not too many fond of the newer model on this forum. Guy at another forum said his new shipment showed up and that he was dissappointed. One of the turrets would not operate and the targeting was terrible. I've heard better tings about the older VSTank vol.3 (cheaper but no rotating turret like the *R). If you find out anymore please post.
http://www.toyeast.com/v3/catproduct...id=1530&clvl=4