Originally posted by DeadJohn Precision (Ricoh's only authorized USA repair center) website states a base cost of $353 to repair the 50-135. If the repair can indeed be done for that price then the lens is a bargain. It could be more expensive.
$20 to buy the lens plus whatever for shipping it to Precision seems like a reasonable gamble. If Precision comes back with a too-high repair quote you can just abandon the lens.
You said the manual focus and zoom are broken. Does autofocus still operate?
I spoke with her and she said the rings do turn but don’t actually focus. I’ve been watching them on eBay, and I can get a decent one for around $450. I think you’re right, it might be worthwhile to take a gamble.