It says this on the homepage...and Google ads abound...

QUOTE
Minimum or Sample Order
We do not have a minimum dollar amount on our stock orders but we do not offer sample orders




Before You request the free Gift.
We will ship to USA, Canada, South America and UK ONLY!!!!

Request Form

Offer valid while supplies last and may be cancelled at anytime by stock23.com

Their supply could be just one set...and then they have your information...