I think I may have found a bug (or feature) of Bulk Buy Crates. I took a Glorious Bulk Buy Crate with ONE Corestone Elbow Pipe into the Conveyors Shop in Bridgepour, placed it on the purchase platform, clicked the MAX Button on the Crate (purchase an additional 499 Corestone Elbow Pipe, and was able to purchase it with HydroCoins (HC). Considering that Corestone Pipes regularly need to be purchase with Prospector Tokens (PT) in the Corestone Harbor Shop, this sort of breaks the game. I understand that one of the features of the Bulk Buy Crates is that it allows purchases to be made even in Shops that do not sell the product, but, in THIS case, I used HC's to purchase a product that normally requires PT's. THAT is where my concern is...

...and, yes, I was able to reproduce it with Corestone T-Pipes and Corestone Straight Pipes...