There address, according to the website is "Spain". If things went wrong, you'd have no chance of finding out who they really are. A genuine seller would publish a proper company (or individual's) name and address on the web site.
You are risking your health as well as your money. Genuine tobacco is not good for you but the fake stuff can be made with just about anything and it it will be put together in unhygienic surroundings.
Also, if you regularly buy from places like that, you are going to end up, before long, with a bill from customs and excise.