I'd never heard of New-Amarine, so I did some research. New-Amarine isn't a mfr, they're an international distributor of Chinese products That $16 diaphragm pump has the brand name SEAFLO, and is made in China, supposedly by a company called Fuan Lecom...but their company info says they're a "trading company"...their entire North American market is only about 9% of their sales. So who knows who the actual mfr is. All of which means that no replacement parts or tech support is available. New-Amerine products do get decent reviews, but no one seems to have owned one for very long.
So if you need a new pump and you're on too tight a budget to afford a "mainstream US" brand name pump, I'd go for it. But I'd buy two of 'em 'cuz like most things, you get what you pay for...and if it's typical of the products sold by another US distributor of cheap Asian, South American and I-don't-know-where-else products (Five Oceans), you'll be lucky if it lasts more than a couple of years.
--Peggie
"If you can't explain it to a six year old, you don't completely understand it yourself." --Albert Einstein


