I've replaced A/C parts in previous vehicles, but not the Focus. Looking at the receiver drier on Rock Auto, they only list a replacement element, so I'd suspect it's integrated into the condenser.
I don't see a lot of AC failures at this site, so I don't think it's a big MK3 issue. I suspect that your first compressor failed (it happens, luck of the draw), and then the repair wasn't done completely correct. Maybe the tech didn't put the correct amount of oil back in the system, and it took a while to seize.
Do some searching on aftermarket and rebuilt compressors. I put a rebuilt compressor in my S10 years ago to save money. It worked great for a week and then blew a seal and sprayed the engine compartment with PAG oil.
5spd w/Steeda STB, e-RMM, Snorkel Delete w/K&N, 120K+ miles
Last edited by saintsfins; 06-11-2019 at 10:03 AM.