I have a LasarMax collimator for sale. It has the brighter 635nm diode and comes with a removable holographic projection target. Fits both 1 1/4" and 2" focusers. It is only 3 years old.
It has two scuff marks on the 1 1/4" barrel where I had to file down the allen screws. They were too long and wouldn't allow it to be used with the 1 1/4" adapter. This unit costs over $300 new.
Asking $185 + shipping. Sorry, no box or instructions.