Before you write that check you may want to consider a few things...The sockets are just as important as the machine you choose, without them it is useless, Most common for arcade tubes is it CR23 (difficult to find and spendy) best to spend more out of the gate with sockets (Imo). The Beltron (If you find one) doesn't get such a luxury, and at best you have to pin it with a universal...I have had many machines over the years and really like that BK for value/support. Beltron, with little support, Is probibally a better machine since it uses amps over voltage...as a result I have 5 of them, and one of those is even converted over to the CR sockets (project from hell)...Moral of this story is, A cheap bargain isn't really the goal when looking at rejuvenators since it becomes such a critical piece of equipment on your workbench if you mess around with tubes.