The B-26 trigger is more than adequate, and would require only polishing of the sear and and adjustment in almost any case.
Mike seems to be a prime source for these, for about $30 or $40 more than the cheapest source, he will examine, lube, and deliver the gun to ensure that the gun you get is ready to go.
After considering all the "hype" (and there seems to be some about this gun) most who really do know air rifles agree that it is a pretty faithful copy of a solid German design, has a very good trigger, with relatively few quality issues in the later BAM versions, and it shoots great. IMHO, it's a better rifle than the TF-89 regardless of tune, and it's plenty heavy.
Mine cost $140 last year (Mike has been known to offer bargains at times) and it outshoots a much more expensive Gamo with a replacement trigger, tuned by a real expert.
To each his own, good luck with your Walmart special, but I think at under $200 it's a true bargain, and hardly a cash cow to Mike.