Havent seen the house, location or immediate neighborhood but looking at comps (South of MM and between Camino Ruiz and Blk Mtn) there have only been 2 closed sales under $300K in the last 90 days. One at $295 and $296. There are 2 other pendings under 300k but one doesnt have a 2 car garage. There are 3 contingent short sales under 300K (one looks like a disaster and other 2 lack 2 garage). The lowest active listing is 350K.
Only you can decide if the house is right for you. if you close you will most likely be the new low comp for the area.