Hey dude,
Just look around and bide your time

. You'll get lucky eventually. You can find these in many offices I'm sure. Recycling plants, dumps, charity shops etc. might all have these if not offices.
The Dell AT101W has great value for money and is a good board to start out with or mod, but really I wouldn't say it's an alternative to a Model M nor is it like Cherry MX Brown switches. Browns are barely tactile at all and feel unclean and sawtoothy in my opinion. Black Alps feel somewhat rough, but are noticeably more tactile. Neither are as tactile or as smooth as buckling springs. In my limited experience, I don't really know of a non-buckling-spring design that gives a buckling spring feel.