It's important to note, that while it is now illegal to buy the Bible online in China.... They are still allowed to purchase the Bible from official church bookstores. This is probably more about finding out exactly how many Bibles are being sold in the country rather than completely stopping them from being sold.
Official churches in China (even those notionally identified with other global denominations) are significantly state controlled, monitored, and censored.
> This is probably more about finding out exactly how many Bibles are being sold
And to whom.