Your estimate is off by at least 100% as I don't bother with a VPN. The Firewall cracks down on them every now and then so money wasted.
The real problem with reading NYT articles isn't the Chinese Firewall anyway, it's NYT itself. About a year ago they put up their own NYT Firewall so only 20 articles a month will make it to my computer. Now it's only 10 a month. Because it's late in the calendar month (i.e. 27th), NYT wouldn't serve the page anyway.
Perhaps people criticizing the Chinese Firewall should think hard about why the NYT has a Firewall. Is the basic concept really all that different? After all, money and markets are just another form of political control, aren't they?