Andrew, I bought a 129 years ago knowing that the engine needed to be rebuilt. So while the engine was out, I fixed the front axle pin, the driveshaft, put hydraulic lift on it, rear ag tires, and a paint job. The engine got a cheater cam and the head shaved for more power. When it was all done i figured out what I had in it. That $100 tractor is now a $1200 tractor. Will I be able to sell it for that? No, but I have a machine that will do about anything I want to it. I thought I got a great deal on a 125 once also. I paid $25. The P.O. said it ran when he parked it. Well, I got it going but it knocked so bad that I was waiting for the rod to go through the block. I guess I can say that I have bought good deals and have put a lot of money in others. But how many other tractors can you go out and plow a farm field with and enjoy doing it. I do not want to guess how many acres that 129 has plowed over the years.