I have dealt with Prince Direct and they are very good. Prices, if they have what you need, are excellent. Tough to compare unless you have identical items, but it seems they are much cheaper than Surplus Center. Prince Direct is run by a couple very knowledgable guys, and they gave me lots of good advice on my project. Last time I talked to them, they were just about to offer a top link cylinder kit. And they knew what was coming in in the future, as far as product for them to sell, so if you have a project and can wait a few weeks for parts, call them up and discuss it. They can be watching for what you need. The product is all new Prince stuff. Stacked valves, loader valves, cylinders, etc.