@tq60
Your example of bags of 25 BNC connectors is a non sequitur compared to Alloy's products.
BNC connectors are commodity items cranked out in mass quantity. Alloy's products are very low rate production or made to order.
I maybe did not state clearly.
The point was that these different vendors wanted our business and, as such, needed to provide samples at their cost for us to evaluate.
What the item was is not relevant. It was critical that we could get a reliable product, and the only way to determine this was to cut them open to examine them.
The OP modifies an off the shelf part to allow for a different use.
If there was real money to be made, the manufacturer of said part could easily produce it for very little additional cost, so the market is maybe not large enough to steal the product then copy, risking further the reputation of the vendor.
The OP is the supplier of materials he sells on his own platform as well as to some company who wishes to sell his product.
If the OP was asking the vendor to carry his product, it would be an acceptable request from the vendor to have a sample to evaluate as well as additional documentation as they need to cover their liability risk.
Given that the vendor is coming to the OP, it is not that much different.
The vendor sells a similar product, but lack of quality has cost the vendor in reputation, and they are seeking a better product.
Ford F-250 6 liter diesel ring any bells?
The OP needs to determine if the vendor is a reputable company and establish a business agreement or contract to protect both parties, maybe.
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