I just checked my usual sources and yes you are mostly correct. There are still, (I assume ambi and flashed chromed,) ones being offered. But…. a stripped NOS, no springs/plungers/lever is $82.00. Right side NOS levers are available @ $12.00. NOS plungers and springs are inexpensive and readily available cheap . Then there’s shipping from ALL the different sources.
Unfortunately now days you’re looking at over $100.00 to get what you are wanting. At that price it might be cheaper to just get a parts/rebuild kit. The plus is you may get some high condition extra part’s depending on the offering.
If you go the parts/rebuild kit route ONLY go with an established confirmed seller. It was cordial but I didn’t really like or appreciate the ATF personally reclaiming the complete 5906 top end I got.
Jim