I bought this focuser several years ago (can't remember where) for $80. It has a profile of 3.5" and a flat base. I should be completely honest here and say that the knobs are plastic, but everything else is metal. It includes a locking screw, and two retaining screws. I painted the inside a flatter black than the original, and the outside of the housing a gloss metallic black. I do not have a 1.25" adapter (though I could find one, if necessary.)
I am hoping to get $50 for the focuser, plus $5 for shipping, and I much prefer Paypal. But I would be even more interested in a 2" low profile focuser. Cosmetic condition is not important, so long as it works and has a profile of no more than 1.5" (preferably less). Homemade is fine, if it functions well. I would be willing to add cash to this trade as well, if it is for a decent Crayford or well-made helical design.