Chainsaw Repair

hey guys was in local shop today and seen they had a sale on theres a 461 on for $999 with 28'' bar so my issue is I want to sale the ms310 so my and my buddy can buy the 461 but not sure what its worth I paid 375 last year and motor was shot after first run so the dealership said so I bought the new 390 from baileys and put it in runs great move a 24 '' no problem so just need a ballpark price im in Canada eh lol thanks boys