Have had the C1310 & the P3000P0A80 show up on my 2008 Prius. Both showed up and disappeared on their own without having to be cleared. But now the mpg has gone from 48 to 32. So bought the OBDLinkLX101 and downloaded Dr. Prius to try and see what the specific problem might be. It looks like to get information that might be useful I will have to pay for either a personal account or a shop account. Anyone know the current price for these packages and is it worth it for what they provide? Will there be future costs for other features or data?