I'll never understand the dash infatuation shown in this board. So take the following with that bias known.

I don't think the general public cares about the dash number.

Modern 22 handguns are mostly shooters. Which even further removes a 617 from the dash craze.

Being a shooter a 10 shot >> 6 round

Is there a lot of traffic on these "hunting" forums? For 22 caliber handguns?

Buds has them for 720 new all day. In the more desirable 4" bbl.

An old, large optic may detract from its value, especially if the buyer has to buy open sights.

I think that's a lot of things that likely contribute to low demand and thus low price for this gun.