This is the main thread for that website made by achow101 -
https://bitcointalk.org/index.php?topic=1142314.0 And he did updated that thread last December 17, 2017 and he's aware about that.
Update #6: Due to the new Cloudflare DDoS protection that has been implemented on the forum. the account statistics checking bot is unable to access the forum to get the relevant information. The site will be down indefinitely and a static webpage has been put in place informing as such.
That site is mainly used not really for the price but for the potential activity. I have no knowledge on what's another good alternative for it anyway, what's your reason about desperately looking for another one?
I have seen such update been posted by achow101 regarding on the situation of bctalkaccountpricer site which it cant really check statistics because of cloudfare. Accepting the fact that this kind of site is somehow helpful though on checking on your potential activity even myself did tend to use this site but we cant really avoid the fact that this site is also being used for selling purposes (checking account history,potential activity and even estimated price) . Ive been searching for another similar website but I cant still see one as of now.