I’m not a Heym or double rifle expert by any standard. I wouldn’t say they are overpriced. I believe they are a newer manufactured, mechanically well functioning, mid range priced double rifle. I think what you see is what you get in a good way. If you paid 15k for a nicely dressed brand new Heym 10 + years ago, that’s a good bargain by today’s standards. And at today’s market that same double used would be around 14-17k (market, not asking), while a new one is quite a bit more.
Looks like Heym’s manufacturing costs and inflation have driven up the costs for a nicely dressed, brand new double into the mid 20s to low 30s. That’s a good bit more than a decade ago.
Vintage and high end used doubles tended to be quite a bit more expensive than the $15k Heym a decade + ago. But manufacturing costs and inflation have not impacted the vintage pricing in the same way. In fact, from what I’ve seen, the vintage double market is no higher, and in many cases lower than back then. So what may have been a 35-40k+ double a decade ago, you might find into the mid 20s, low 30s now with some due diligence. These doubles aren’t functioning any different and certainly aren’t any less awesome than there were a decade ago. They just aren’t currently a market favorite.
It’s just a value judgment. If I can have a vintage Westley, Holland, Lang, Watson, etc. that’s mechanically sound and also looks the part, I personally would rather have that than a new Heym. Same issue with a great Leige maker’s side lock. But I absolutely can see the other side of the coin. The Heym will likely be regulated with current factory ammo and be bomb proof (within reason).
A decade + ago, they were on two different playing fields money wise with the nicer vintage guns being much more expensive than a Heym. But today, there’s often not too much difference. Thus, I tend to appreciate the value of the older double in the current market.