Yup I did notice that same for the 900mbls package.I saw their site and questioned the legality of how they're advertising prices
e.g. go to the main page, scroll down - see "2.3gbps for £25"
no * and it clearly tries to tell you its £25.
Then underneath the banner is "£25/month for 3 months, £50/month thereafter". Seems shady even if its legal but I thought that had all been stamped out long ago...?