Not sure what "Vaughn's" is, but that is a pretty decent setup. I know I'd like to have one on my bigger bandsaw ... not sure how he's making much money at that price though ... looks like a fair amount of material, and time.
Mine cost me a lot less than $240 to make it ($175 + shipping), and I think with the spiked bolts it'll be more secure, especially on pieces that don't have nice flat 90º ends.