Mainline Prototypes (if there real) are making both the MK1500G's and Green Goats, but as I said before, if there real.
They do have this deal, they send the product, then you send the money when it arrives, but this to could be bogus, but then again, they could be doing this do show the there company isnt a big fraud.
And for the Green Goat you wouldn't even need a Sound Decoder, because there totally silent
I'm starting to belive they MIGHT be real. I asked about dealership indo from them, and they require you to be a registered reseller. And Model Railroader seems to belive them to.
Kaslo Shops is making a shell for the MK1500D which is very similar to the MK1200G in appearance. For more info check out http://www.kasloshops.com/projects.htm