Yeah, sorta where I was going with my comment. I hate to pee on anyone's cornflakes but I own a metal fab shop and I figure it would cost me 2-3X more to make one than buy one. Now if a guy has nothing but time and has the skills and equipment and wants to make one just 'cause, then that's fine.
I sure have found this to be true of late... and not so much that I'm worth $25/Hour, or $50, or whatever.
For me, it's more related to the simple amount of time, the risk(s), the learning curve (even if I am a MetalMasterCrafter) and sometimes EVEN THE RESULT (I even sometimes end up just buying the F'ing part later on, after wasting my time for a while!!!). I've made some CustomMickeyMouse stuff that's likely even to pass Tom Schmidt's Engineer review and the PRIIIIIIDE... OH MY! When you're Buddy says, "Hey, what's that; it's trick dude!" pfffft; I coulda cut my thumb off making my crash plate and I wouldn't-a cared THEN!!!
But, the simple cheap cost and the usually better craftsmanship I get (including fit/fitment these days... not-so-much way back when) makes it hard for me to craft much anymore. THHHEEEEN I can CUSTOMIZE my Part (yes, paint is customizing) and Make It My Own!
Simple cost of a steel plate if you have the tools and wherewithal does make ALOTTA sense to me though... on my Gen. 1 I was on a SUPER-TIGHT budget and having to do A LOT to her to get her up to speed (she needed/deserved it). I crafted all sortsa schtuff that I don't think'd piss off the next Owner when s/he finds them. They may smile/chuckle, but they won't be disappointed!