I've had some pretty good luck buying from EZVAPES, regarding both pricing and service, although I am currently waiting for two grinders that were out of stock when I ordered, even though the web site said they were both in stock when I ordered. That's not cool, but I feel like their customer service rep has gone pretty far out of his way to take care of me.
I believe they have a price match policy, which I didn't know until after I ordered 5 grinders from them. That's OK, though, because I got some pretty good discounts anyway, on top of already-reasonable prices. After ordering my first two grinders from them via Amazon, my shipment included a card with a $20 off coupon code for any order over $100. The coupon code did not work on Amazon, so I ordered through the EZVAPES web site, where the coupon code did work. (The pricing was a little different between their own site and Amazon, though, so I ended up changing part of my order from a 4-piece Cosmic to a 5-piece Diamond Grind.)
There is another site with a similar name ("EZGRINDERS, maybe). From what I've seen, it looks like the same company, although I think EZGRINDERS is based in San Francisco rather than New Jersey.