Never seen a set available for these trucks. Usually yeah, you would see them all over ebay for about $15. But you gotta keep in mind those are mass produced over seas, which is why they sell so cheap. The reason why the guy probably wants so much is essentially he's starting from scratch. There are no premade templates out there for him to use. It's gotta be worth his while to do it, since alot of time and labor goes into making them. Think of it as a start-up cost.

You could probably get him to lower the price by asking about group discounts. The more people committed to buying them, the higher the discount will be.

Not sure if this is the guy you already contacted, if not, you may want to try contacting them as well:
http://www.blackcatcustom.com/

I've seen their gauges on a members ride of another forum, and they look great! They're not the indiglo syle gauges though, just overlays..