That's a great price for that work.
Love the SN on your 50/1.2 Ais. I'm glad they still make them. It's a highly under-rated lens.
I would like to see some side-by-side comparisons between the 50/1.2 and 58/1.4. I've compared the 50/1.2 with the 50/1.1 Nokton, and with the older 55/1.2 Ai. These are all under-rated lenses.
I was never able to bond with Canon DSLRs. I've owned several, and dumped them.
My main love is Nikon, but lately I've been dabbling in the Sony series, namely an A7 and an A7II.