Great to have you list out all your actual costs. I still haven't gotten to fixing my XTs let alone F122, but this is plenty of incentive to get off my ass.
I actually bought four clamps already for no other purpose than to fix my Model Fs, so I guess you have to add $8 to my cost basis, plus quite a pile of money in shipping to my location. The value to me will be pretty high also. There is no way in hell I will ever sell my collection, even if (thanks to me or some factor in shipping) a good 1/3 of my collection is not currently usable.
Interestingly, when all that's said and done, I like my well-used M122. I think there is really something to be said for vintage M buckling springs. The actuation feels less crisp than new springs and less fun than Model Fs, but the noise factor is significantly lower and the springs feel much more relaxed. Its like using Cherry Browns. Browns are not the best in many specific circumstances (eg not the most tactile), but they work good and are very satisfactory for daily use. So the current keyboard of my choice is back to the M122.
I would actually strongly recommend that a prospective buyer concentrate on the M122, not F122. Light in weight, very cheap in price, easily sourced parts - M122 occupies an ideal price and performance point.
I"m sure Dante is having a great time now with the M122 you sold him for 5 bucks. If I'd known better, fohat, I would have bought up all your M122s for cheap and painted each M122 a different color!
Fohat just sold an F-122 for $350 barely a few days after he listed it. Now as much as I respect fohat and believe that any keyboard processed by him is worth significantly more than the average garage sale keyboard, I don't believe an F122 is worth anything near $350.
It sold a few hours after I listed it, not days.
Just to put it in perspective:
165 keyboard on ebay
17 shipping to me
20 Teensy delivered
5 USB cable
10 misc hardware - bolts, solder, paint
22 key caps delivered from Unicomp
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$239 hard costs in materials
Realistically, I probably spent at least 6-7 hours in time that I spent finding and ordering all the components plus the actual physical work performed on this board (nothing works right the first time and you have to go through an entire process each time), so at a $350 selling price that pays me $15-20 per hour.
Despite people on this forum who pretend that good raw F-122s are plentiful and cheap, Soarer's Converter has made them very hard to find and expensive in recent months. I strongly recommend that these people do what I did, and see if they think that it is a profitable venture.