If you're wondering if they are worth the cost, spend some time reading the various forums on the semi auto 22's. You'll quickly find numerous recomendations for ammunitions that don't jam as frequently. You'll also find many posts about which spring to use with what ammo. Fact is that the semi auto 22's can be rather fussy about what they shoot well without causing jams.
That won't happen with a revolver, if it fits in the chamber it won't cause a jam. You can also mix shotshells, low velocity target ammo, and hot HV game rounds in the same load and every shot will be on target without one single jam. About the only issue with the revolver is that it's necessary to clean out the cylinder if it get fouled enough by shooting to make loading difficult because an improperly seated round will often misfire on the first try.
Another benefit of a revolver is that time spent practicing the use of a double action trigger pays off in superior trigger control skills. This means that once you master that long and "heavy" trigger, you'll shoot better with any trigger made.
Finally, you can probably put somewhere between 3000 and 5000 dollars worth of 22LR through a 617 before you even start to wear it out. To be honest, I don't think you'll ever find a semi auto that can come close to lasting as long as a 617. Treat it properly, train you children, then your grandchildren, to maintain it, and you're great grand children will still be able to use it.
In summary, you'll have to look very long and hard to find ANY consumer product made today with the longevity of a good revolver. Yeah, the buy in cost is a bit high, however in 30 or 40 years it will probably the most economical purchase that you have ever made.
PS; if you look around, you'll find that used 22 caliber S&W revolvers cost nearly as much as brand new guns. The reason for that is that most won't ever sell their used 22 revolvers, they are too much fun to shoot and also very cheap to feed. As a result they are not widely available on the used market and good old supply and demand commands a high price.