It has been tested. It has been sold and used commercially and by the government for $300 before. This is not an example of actual costs being $50k. It is an example of massive incentives on the seller’s side to rip off the one who pays (the US pop), and no incentives on the buyer’s side to care about it.
If it is the wrong metal, or wrong enough alloy, merely by touching the things it is in contact with can cause a galvanic reaction. Several airplanes have crashed due to damage caused by galvanic corrosion. The FAA is frequently called a "tombstone agency" because they tend to only take action after a bunch of people die.