Most likely a company promotion his/her own website.
There are plently of websites online that have stuff like this. Generic cheap cheap ink. Claims to be just like the genuine cartridges, but in reality it sucks a lot more. Then they have a 100% guarantee, but is it worth it to ship them back? No...
I haven't ordered from them so I don't know which company they order from, but their prices are more expensive than megatoners.com
Megatoners.com sells the cheap @ss ink, but so far their ink works. I prefer something higher quality though.