eerrr you are suppose to click the all chinese word link I attached, not google another company called global sim. Anyway my suggestion is just go to the shop and talk to the chinese guy. If he really wants to con you its just $150. On the other hand, he could give better advice than me. i.e. which card is more suitable. The shop is an agent and they carry a lot of other brands.
Oh its definitely true. ie multiple sellers offering similar package