Not to piss on the party but assuming kit only top ends...
What happens if you get a crappy cylinder with the kit?
What about guys who will buy endless cylinders 'till they get one with favorable timing...
I was involved in some .22 rim fire bench rest competition some years ago, kind of informal fun stuff but still with $ prizes.
A few guys started throwing crazy $'s at it and would just keep buying barrels 'till they got one better than anyone elses, an arms race, lol. Sucked the fun out of it.
Turned into a money game that most didn't want to play and it eventually disbanded.