Someone will offer a decent 2 year warranty on a '93 car? Read the fine print as it might not cover much.
50K interval t-belt so it's due at 99K miles for another one, if the 850 t-belt breaks it gets ugly.
Make sure the AC works as evaporators are common BUT with a 2 year warranty, and make sure it's covered as it's a costly job (about $1100, parts and labor).
Also be sure the trans is covered as trans failures on 93s between 100-150K miles aren't unusual, especially if the fluid was never changed (very possible).
Otherwise, the 850s were good cars if well maintained, like anything really.