Look at it this way; unless you bought those from eBay at inflated collectors' prices, you probably paid a lot less compared to the amount Round2 now charges.
Now comes the next logical question... Have you considered selling a few of your duplicates? (No, I'm not "in the market". It's just a hypothetical pondering.)
Oh, hell, HiWay hobby blew out those Reliants at $10 each!
Yeah, I've been thinking of maybe a table at MosquitoCon some year. But I don't do ebay or anything like that. Shipping things and figuring postage isn't something I like to do.