There are people paying almost $360 for the PLR-22 (maybe more). I think $360 for an SU-22 is probably a good price, particularly if there aren't a lot of other costs for inflated shipping, credit card fees, etc.
I know it's easy to think about a $189 Ruger 10/22 or a tricked out $360 10/22 and think the SU-22 seems over priced, but the SU-16 heritage makes the SU-22 an awesome and very high quality .22. Buying quality only hurts once. Besides, I tell my 10/22 buddies, "Can your 10/22 do this?" as I fold the SU-22C in half.
If you can wait, there should be an SU-22C from the factory soon, if you want one to match your SU-16C. Waiting is difficult, and you seem to be deep in the throes of a mighty gun lust.
Like my PLR-16 and my SU-16, the SU-22 really smoothed out and runs like a Swiss watch after about 1000 rounds. If you could shoot my little SU-22, I think you wouldn't hesitate to spend the $360. It's a couple of tons of fun.
The only down side is loading those little .22 cartridges with my big fumbling thumbs. I wish there was a tab on the side of the magazine that allowed my left thumb to pull down on the magazine follower as my right hand dropped in the little .22 cartridges, like the magazine on my Beretta NEOS .22 pistol. I just checked and I think I might be able to disassemble the 15 and 27 round mags, drill a hole into the mag follower, tap a hole for a #6-32 stainless socket head cap screw and reassemble the magazine. Then I could load one round at a time and mark the position of the hole on the side of the magazine and play connect the dots to Dremel and file a channel in the side of the magazine. Install the socket head SS cap screw and the socket head is the tab that my thumb could use to lower the magazine follower. It even seems reasonably ergonomic for left handed folks. Darn! I didn't have time for a little project like that today. I'd try it first on the 27 round magazine. I haven't even shot the 15 rounder yet! Pictures to follow? If this works as well as I think it might, modifying Black Dog magazines might be a good niche business for someone with a CNC milling machine.
A mag loader would help a lot, but the Black Dog mag loader is $120 and I can't talk myself into it, even though I'm sure it's nice. I had just sent an email to Guy at maglula when I saw your post in this thread. Guy is the son of the maglula father and son team, and maglula is the Israeli company that makes great magazine loaders/unloaders. I have three of their mag loaders and they're the best. They sell for $20-$30. I requested a maglula mag loader for the .22 Ciener and Black Dog magazines. I think that segment of the magazine industry will grow a lot in 2009 as ammo prices increase and more AR shooters install Ciener uppers and Kel-Tec ramps up production of the PLR-22 and SU-22.