cnelk, I show that drawing to all our customers. It's funny how people have no grasp of that or that there is variability in pricing between high quality materials and low quality, yet all of them have bought a nice shirt and a shirt to mow the lawn in, but they're baffled by the concept that a nice faucet or whatever costs more than a cheap one.
I also do engineering and I'm curious if your engineer who's stamping plans for $400 is a "moonlighter" or an actual insured firm? I don't see how they could do it that cheap, unless it was really boilerplate and they essentially already had it done. Also, depending on the complexity of the building, good engineering, usually ends up saving more $, so spending $1k could save money. Perhaps not on a pole barn, but building projects in general. A few months ago a friend of mine asked me for a quote for engineering on a retaining wall, I told him $1200 (it's a big wall), and he was floored by that price and got someone else to do it for less money. He showed me pictures of the footings and I laughed my ass off! I would have saved him at least $2k on concrete alone, going with a more thorough design, i.e. sharpening my pencil and spending time on it to save $. I even told him that and he still thinks I'm too high (by saving him money?). He's also a contractor and he doesn't get that. Sometimes it's hard to tell when you're getting bids who's cheaper, particularly with design, if you don't know what you're doing.