Technical Question re: using data SIM card

[snidely]

Originally Posted by andy

That looks like quite a bit of money, considering the price you mentioned first.

Can you just buy a SIM direct from the network or its shops? You hardly need any language skills. I've bought a SIM before by taking the back of the phone and pointing.

I'm thinking of trying that. I would assume there might be shops right in the airport. Since I have a Piranha phone SIM and wifi calling on both our phones, I don't expect any problems. The cost posted here under the China section is outdated - posted 3 years ago. It gives GPRS data card rates. I can't find such cards. China Unicom, the only provider that seems to sell country wide cards, only shows 3G data cards on its site.
Andy - How do I contribute info to a particular page on this forum? Eg. The website to see products for China Unicom is only in Chinese: It's at: 10010.com Google translate does an excellent job in translating it. How/who would I send updated info to?
A Google search for China Unicom only gives you the corporate site. The link, here, takes you to the corporate site. No product info there AND no links to find it!

It looks like the lowest level data card they sell is for about $50 for 3GB.
Side note: We live in the San Francisco area with lots of Chinese. A large number of them in the heart of both San Francisco and Oakland's China town centers don't speak English! If the Chinese here don't speak English I don't expect much in China. Maybe putting that SIM in my Tablet and using Google translate would come in handy.