Have found an interesting report causing key lengths and their possible counter value --> https://www.heise.de/security/meldung/Hunderttausende-Infineon-Sicherheits-C... .
If RSA 1024 is about 40 - 80 Dollars worth but RSA 2048 belongs from 20k to 40k which seems to be the today disposal values regarding that report, it might be interesting what happens with 4096 or 8192 :-) .
Only as a short beside tweet.
All the best,
Erik