That camera looks like it would be widely available in one of the 9-story “computer city” buildings on first ring road. Bargain low and walk away to the next guy selling cameras and you should get a good price. I’m not the best bargainer since I hate shopping I usually hold out until I really really need something and then cave for a price a bit higher than what I expected to pay.
I was surprised to find that electronics like this and “fake” name-brand clothing is actually cheaper in Shanghai markets like Qi-Pu Lu.
So you want to record your English teaching? Many private schools actually already have a minicam on site.