native GEA-FTTP is the same price as GEA-FTTC if you order the same speed package. e.g. a 40 or 80 Meg service. The faster services obviously cost more.
The GEA-FTTP pricing from Openreach or more likely BT Wholesale price lists are available to the ISP and they should be well aware of them and they will have made a decision to not supply GEA-FTTP.
Use the checker http://www.btwholesale.com/includes/adsl/main.html
and once option of FTTP at 330 Mbps appears on your number, go back to the ISP checkers and you will find some change what they offer you e.g. BT Infinity adds their 3 & 4 options to the range of Infinity offered.
As things stand only BT Retail really sell to the average consumer. PlusNet too, but you have to be an existing ADSL customer.