I haven't kept up on prices for them but .410 Skeeter's bring some pretty heavy bucks lately. $4k seems very high for their quality. They are heavy guns and work well for skeet as they were intended. I think you'll find them on the heavy side for your use. I'm of the opinion that a 6lb even gun in .410 is about right for me. I think the Skeeter's run about 7lbs.

If I were thinking as you are, I'd look at the AYA's and Arrietta's. Also the Ugartechea guns might suit you.