I was on the nytimes.com website yesterday and this popped up as an ad. Me and my wife have wanted to try grass fed beef for some time. I did some research on them and they are legit. A Montana ranch that grass feeds its cattle and uses no hormones.
The deal was legimate as well, 8 free burgers. You do have to pay $17 shipping because they need to ship 2 day. But we added a few more items and it was still $17 to ship everything plus the prices of the items we added (burgers were still free). We are trying their stew meat as our other items.
The items are pricey but I guess you would have to compare them to a farmer's market price. Anyhow if we like them we might buy more. And if you hit $90 you get free shipping but I do not know if that would also combine with the free burgers.
In any even the normal price for the burgers is $27 so $17 including shipping might be a good way to see if you like grass fed beef. Link below. I know it says 4 but it came up as 8 burgers on checkout. Also we placed the order last late afternoon and they shipped the same day so we will get them Friday.