Miracle Truss is a very nice building. I thought, right up until the time I called them, that that was the building I was going to get. But, after getting the quote from them, looking at what you get for that much coin, looking at everything that doesn't come with it (wood, doors, windows) and adding up the numbers, I found I could have a premium flush frame pole type building (allows for standard batts and interior wall finishing) built, including labor for 25% less cost than a materials only Miracle Truss building. There was no decision to make. I could spend 8k less and not lift a finger, or spend $8k more, try to beg, borrow, and steal some help, and spend months and months of my time putting one up.
MT does have a nice product though, and while it doesn't fits everyones' needs or budget, it is one to look at. Be sure to look at Adams Truss buildings as well. Similar building, costs a lot less.