For me it was a no-brainer. I paid $1200 for my Weber back in 2006. To rebuild it into literally a new one for $181 saved me $$$$.
I've looked at some of the newer Webers, still great grills but didn't appear to be built like the tanks they were building 10-15 years ago.
Where'd you get the pricing for your parts? When I called Weber I was calling primarily to get the part numbers, thinking I could find them cheaper online. Most online pricing for the flavorizer bars alone was around $169. The customer service rep gave me a price close to $159, then said, "I can give you a better price than that, let me check." I figured she come back with something like $145, blew me away when they ended up being $100. Same for the grates and burner set. Got everything for $181 which included the $7 for shipping. The cookbox was totally free, even shipping which came via freight carrier. 18 wheeler pulled up to my house.