Cherry keyboards are also pretty much up to scratch as a Model M.
I picked up a half bust one as part of a gayboy* full of ditched IT kit that I ethically recycled**, via eBay and assorted scrappies. About 60% of the keys worked.
Sent them an email, they felt it was still covered by warranty and as long as I sent the bust one back for QC review I got a free replacement. With brown keys, since I'm never sure if I want it hard or soft ;)
*a small skip :)
** the PMs plan was flytipping.