Your choice is to play another lottery or just pay a lot more.
I prefer to do what I understand and capable of doing by myself. And what is not a lottery.
I use easy to make with nails scissors shims and test without shims and with different number of shims added on the same test roll. One, maximum two fifteen frames rolls are needed. If it is tested on film.
With digital camera (like cheap used m4/3) no film needs to be used to re-shim.
I have lenses done this way and in use for years now.
On the opposite, finding old Leitz, Canon and else which has no scratches, fungus, separation or/and haze is the lottery indeed, which you are willing to pay and play.
Lottery to find without all of it and lottery to find it without outrageous price.