BJ’s Wholesale Club is overtaxing customers according to a Miami judge, and the store may soon be under a court order to change its ways.

Miami-Dade Circuit Judge John Thornton certified a class of about 750,000 BJ’s members in Florida, paving the way for them to seek a permanent injunction against a tax practice Thornton ruled in February was improper. The plaintiffs’ ultimate goal is to seek damages in the hundreds of millions of dollars, said co-lead class counsel Victor Diaz of VM Diaz & Partners in Miami Beach.

(l-r) Victor Diaz, Steve Silverman, and Erin Bohannon.