You ought to try putting the rest of your parts out on Ebay. I watch Ebay daily for Sammi parts and you would be amazed at what some people will buy and the prices that they are willing to pay. It is very easy to do. I would bet money that you could get rid of everything on this list the first time you listed them on Ebay. Another benefit to Ebay is that shipping is not your responsibility to pay for. You don't ship it until you have money in hand that includes sale price and shipping cost.
I only have the rear axle. It is in great shape, I swapped it out for an axle that was locked and SPOA ready, not because it was failing in any way. I do not know the mileage on the axle, I personally have put about 2k on it. It is from an 87' Samurai.
The tranny has about 50k on rebuild and may have a slight leak from the front seal. I don't if I spilled some oil while i was removing the motor or whether it actually has a leak. I have never seen any spots in my driveway from it. The shifter position screw has been replaced with a steel bolt that will not break off into the tranny. It shifts and is a nice quiet tranny.