Thereis zero reason to buy an ammo sensative .22 Lr unless you are a target shooter.I owned and sold a great older Browning.I have an old Colt Woodsman. I love both. They are, however, both way overpriced. If I were looking for a reasonably priced one, I'd ask if companies like charter or CZ made one. Failing that, for a kid, there are plenty of reasonable .22 revolvers out there. Not the same, but you shouldn't be looking at $350 used to $500 on a .22, particularly one with as many bad reviews as the Sig. FWIW.
FQ13