Not sure what the problem is. The did original creator Maximus/Griffindod not encourage others to make their own versions?
I think the most ridiculous thing about the barrel arcade is the price tag.
My only complaints are the quality of work combined with the "I'm making one of a kind machines!" while copying someone else... and even if he wasn't copying someone else the guy claims to have already created and sold two copies of this same machine.
If this was a private project I would be a lot less critical of the construction, but considering this guy is trying to clear $1,200 for this thing I think it's fair to point out that his controls look awkwardly low compared to the position of the screen, the t-molding does not look like it was installed very well, and it's pretty obvious that he just found some random glass table top that came close to fitting and threw it on there.