[Kevin Sevcik]

You apparently just missed the AM Planetaries coming back in stock this morning. At least, I got an email from AM about the being in stock again.

Do you absolutely have to have the AM planetary? AM's CIM-Sim has a similar output at a 5:1 reduction. And Banebot's CIM-U-LATOR has a functionally identical output at a 2.7:1 reduction.

You might also want to look at Banebot's RS550 motor. You lose 40 watts and 1400 RPM, but that's not all that terribly different. We're grabbing some to use on our shooter as stand-ins for the -0673 FPs until those are available somewhere.

Another option is to switch to Banebot's RS775-18 motor, you only lose 20 watts at 12V, but the RPMs are down at 13000, so you'd need significantly different gearing.

TL;DR. I wouldn't count on either of those things being available at any price, given their scarcity. I'd just start making alternate plans with in-stock items.