@MediaActivist Depends on what your requirements are of course (do you need perfect colour accuracy, or "just" legible-ish text? etc), but I've had a 1/1 success rate that "the cheapest USB flatbed scanner I could find on the local classifieds board" worked fine with SANE out of the box.
Always a gamble of course, but hard to beat the value.
(Sorry, can't find the model number right now, but it was a Canon Canoscan something-or-other.)
I've got an Canon DR-M140, works perfectly with sane-canon_dr
* sheet-fed scanner
* 600 dpi max
* color (24bit) / gray (8bit)
* cheap (2nd hand: 120 €/140 US $)
* fast (enough)
https://www.usa.canon.com/support/p/imageformula-dr-m140-office-document-scanner
😀 👍