I have figured that myself. I know since I have done similar - I have gotten some incredibly bizarre (and really ridiculous) commission requests that made me just think "Uuuh, yeah, I'm not doing all that". One in particular was from an obvious stoner who wanted some ridiculous "symbolic" painting, featuring aliens wearing tribal masks, a New York subway leading into the ocean along with the Statue of Liberty holding a marijuana leaf, some magic mushrooms in on corner and rainforest in another, some space stuff and holographic images of other stuff in the sky, all with himself in it viewing it all
That was the biggest WTF commission offer I've gotten and it would have taken me at least a month of work to do all that and try to think of a way of making everything "flow" together like it really belongs, so naturally I asked a lot - a thousand dollars since chances were it would take me almost 100 hours and I would miss out on other commissions during that time...The dude just complained about the price. I guess I shouldn't ask for anything more than pocket change from a hippie - they have no money
But no way in hell was I going to do something that difficult for anything less than the most I can justify charging (normally I'm more humble, willing to work cheaper if the commission is at least easy/fun) Maybe that's what this company is like with my jacket, one thought it was so difficult a design that they wanted to get more than their money's worth for all that work, the others just didn't reply at all, they saw my jacket design and ran
I wish I knew how to do it myself, but that takes years of training which I can't afford