The pricing was £10 per/month and it included ISA. I think there was also a £100 version if you pay by the year which saved you 2 months.
However in today’s Financial Times ( see https://community.freetrade.io/t/free-trading-apps-investment-freedom-or-false-economy-ft-freetrade-feature/7512/1 ) article it mentions the Alpha pricing will be around £7. Hopefully we will learn more soon.