It can still trivially be tracked by the card networks as people start reporting large fraudulent charges and card details aren't worth the hassle unless you're

It can still trivially be tracked by the card networks as people start reporting large fraudulent charges and card details aren't worth the hassle unless you're literally getting thousands of them (via PoS malware or similar automated means). The other commenters' idea of raising the price a little bit and pocketing the difference is more likely to last and net more money in the long run as less people would question and bother disputing a slight surcharge.