They only sale to dealers.
My wife owns 1% of Stone Free Manufacturing (she insisted on that LOL). She doesn't intervene often but she did established two rules for us.
1. Only buy Made in the USA
2. If in doubt see Rule 1
She's already made one exception where we can use foreign parts for prototyping but any parts we "use" must be Made in the USA. The operative word was "use" so I've asked her for another exception. There are quality parts being made in both India and Europe that we have no desire to duplicate such as some of those offered by this company. I asked her if she would object if we became a dealer for foreign made parts and she's tentatively agreed to that. I will discuss this with my partner today. If he also agrees then we'll contact this company to see if we can arrange to be a US dealer.
That could solve the problem for those of you that live in the US and want to purchase some of their parts. No promises but I'd like us to be able to provide this service if you guys need it.