I have not used them, axy, but I did see that they used to have a store on eBay. I think it was in Australia. When I read all of their feedback it seemed like the only big thing was that shipping for certain items could take a long time. Of course those could have been from someone ordering from a different country. They seem to have been around awhile. If I tried using them I would probably order something inexpensive and maybe send them an email to ask how long shipping would take to my country for that item to judge their customer service.
Okay, looking at the site again I see that the $3 price is only if you order a quantity of 10. It will actually be $8 to order a single one. I'm sorry I didn't notice that before.