I don't see why people think Power Tracs are cheaper than regular tractors. When I was first considering the 425, my next choice was a Kubota BX series because of similar size, stability on hills, 4WD, etc? Comparing the 425 to the BX, and going by current prices, by the time you put a bucket and mower on both, it's about $13,500 for the BX versus $11,750 for the 425. Ignoring shipping and taxes, I will certainly admit that the $1750 difference is significant. However, for the difference, with the Kubota you get: a great diesel engine, a two speed drive system with real axles, ability to use many cheap 3 point attachments, a real warranty, an established and widely available dealer network, and much less depreciation if you need to sell. Given the efficiency of the diesel versus the gas PT, I'm sure you could make up the cost difference in fuel savings alone over the life of the tractor. Further, due to competition, many attachments (e.g., post hole diggers) can be had for much less than PT charges. So, I do not think that Power Tracs are cheaper than Kubotas when all things are considered.
To be clear, I did buy the 425 due to its better maneuverability, better capability as a loader, out front attachments, and quick attach feature. I just thought it would suit my needs better. However, I never thought it was cheaper.