Converting plastic Rhinos to Predators

[Stormwind]

I found some wonderful (if pricey) kits on Shapeways to convert Rhinos into Predators and Razorbacks.  But I was looking at this one:

http://www.taccmd.tacticalwargames.net/viewtopic.php?f=7&t=18630&start=315

...And wondering if there were any of this style of Forge World turret I had missed? I can't seem to find it anywhere.

In addition, are the prices for the plastic Rhinos likely to go down anytime soon? They seem to be more like £2 each on eBay which is just bonkers.

[Jimmy Zimms]

Those were some fan made proxies that were once available but have been shut down from some actions from a company headquartered in Nottingham.

[Stormwind]

OK, no worries, I just wondered if they were Shapeways ones I missed!