04 TRX 450r lower end rebuild cost

[Bumptious]

I am looking at a trx 450r that I am interested in buying. He's asking for $1600 for it and says he has lots of after market parts ( It has a full Yoshi exhaust, hot cam, new top end, nerf bars, true bead locks, Elka front suspension, pro taper bars, hand gaurds), but I don't want to be dumping a ton of money into this. The owner claims that the only problem is that the lower end needs to be rebuilt. He says it would only cost $450, but that seems a little lower than I thought it would cost. I'm not mechanically savvy so I would need to send it to a shop for the rebuild. How much would it cost, including labor, for a lower end rebuild? Am I wasting my time with this offer or should I put the money into the rebuild?
http://images.craigslist.org/00i0i_30KvkFpNEYc_600x450.jpg

[blacknblue#2]

at 1600 for the quad you cant do any good if you cant do it yourself. If doing a bottom end you almost always have to do a top end with it, plus whatever else may be broke once you got in there. I wouldn't start a motor rebuild myself without at LEAST $800 available. Probably be double that for a big shop to do it, Unless you get lucky and find a guy that can work on them that wont rape you like a big shop would. As for the aftermarkets everything I see is cheap stuff so don't let him suck ya in with the word aftermarket lol

[Bumptious]

at 1600 for the quad you cant do any good if you cant do it yourself. If doing a bottom end you almost always have to do a top end with it, plus whatever else may be broke once you got in there. I wouldn't start a motor rebuild myself without at LEAST $800 available. Probably be double that for a big shop to do it, Unless you get lucky and find a guy that can work on them that wont rape you like a big shop would. As for the aftermarkets everything I see is cheap stuff so don't let him suck ya in with the word aftermarket lol

Alright thanks man, this helped a lot.