bearing

I'm trying to identify the source of this buzzing sound. Setup: -Gen2 gearbox rebuilt and fitted with a Quaife lsd. Fitted on my gen 1. -Rey's cables. -CS stage 2 rmm. Hardrace (OEM+, full rubber) side mounts. It shifts perfectly, works well, no problem. Oil is fresh - Motorsport CRX LS 75w90...

so i want to buy a 1.3 rotary mazda rx8 from 2005 as my first car. I found a really cheap one ($2800) but it has a broken crankshaft bearing. My question is, is it safe to just press in a new bearing? or is it possible that other engine parts are broken as well? and is 2800 a good price? it has...