Yeah, it’s pretty funny to argue like that because there’s a reason big companies make so much money. It’s because bulk discounts save a shit ton of money. Arguing OP saved money in any way is just ignoring reality. It doesn’t matter if the materials are different or not, they’re gonna last just as long. I love DIYing stuff. Like I said. We built the foundation completely by ourself. It was better than any contractor would ever build it. We were able to buy the materials in bulk so we saved a bit, probably not as much as a contractor though, but due to the hours put in I’m pretty confident we did a better job (we didn’t do it ourselves because we wanted to but because of bad planning on our part). It felt good to learn how to lay foundation properly.