You can put any data into your own database, but why would you pay $$$$ for something you will use only part of?

The way I understand it gtx puts its own rating in the data as well to use it in the gtx rating, that is why it costs more.

You might be better off just getting raw data from someplace like Cyberhorse*, and if you can't do a parsing programme yourself (to turn it into data ready to import into a database), they are available.

Costs less than $300 a year.

*Mods. Not sure if I'm allowed to mention the provider?

Good luck