I've seen this already too many times. A brand new BCD stored for years in the dive shop, sold at a bargain price.
After a few dives, flanges pop out broken as if they were fine glass. The cordura is pristine, the general BCD is pristine, but all 3 flanges came out as glass.
Also, a few days ago came a customer with a brand new Mares Syncro Power that was sitting in a dive shop for years, never wet. Pristine at sight, but it could not keep air. As result of the first inspection, the bladder was completelly delaminated. The urettane seals (to seal the stiches) was reduced to small plastic pieces.
Even free, the amount needed to restore to service could be high for a BCD that is old.