Probably just another guy selling from his Mom's house, after School hours.
Thousands like them.
Or maybe only the server and page address is in USA (.com without any other extension) and the guy is actually in China or anywhere else, shipping direct to you. (which you will only notice after receiving the goods).
Wonders of Internet shopping.
Simply while I was sipping my morning coffee, I checked it:
the domain is registered by:
which is a company which does just that: you pay them to go through the hassle of registering the site. Period.
Anybody in the World can use their services.
The site is hosted in:
Where on Earth is "amplifiertubes"?