This is how the place I usually register .co.uk domains at is trying to get people to buy the .xxx - totally scare tactics:
123-reg.co.uk pricing:
Sunrise AT £199.99 ($325)
Sunrise AD £149.99 ($244)
Sunrise B £199.99 ($325) one-off blocking fee
Landrush £129.99 ($212)
Pre-reg £69.99 ($114)