There isnt much reason to buy a physical disc unless you want the disc itself.
Which drive do you use? My specially-selected-for-the-task drive (selected 10 year ago, to be honest, and I don't know what I will do when it dies, all modern drives looks to be crap) with firmware tuned for audio grabbing takes ~1.1x to grab CD, so 45 minutes CD will be grabbed in 1h20m (because you need check pass, of course, to have high-quality version!).
It is much more likely that you will be getting a loudness-war mastering problem than a bad copy of the data. That you can only fix with better source data.
And, yes, old Audio CD (new old stock, 10-15 years old) can be grabbed at 6-8x speed. Looks like new Audio CD pressed much worse than old ones.
I don't believe in 48x exact extraction, sorry.
That said, I'll pay even more if they offer high-quality downloads on Bandcamp.