Virgin Atlantic site $ not £

I am trying to find out how much I would have to pay for miles booster in case we decide to fly home from Atlanta on a Saturday 70,000 miles each or stay over to Sunday 47,500 miles each. Not till next march.
Mrs D has 114,000 miles and our recent trip gave us each 13,029 miles so if I buy double miles on booster we can get a Saturday reward flight. Take away a night's hotel fee and get my son to pick up from the airport saving a taxi fee it may be cheaper.
But, I just can't seem to get into Flying Club with UK pricing. Help

Dick D

T&C's say miles booster in Sterling priced at £0.010 per mile or US $ 0.016

T&C's say miles booster in Sterling priced at £0.010 per mile or US $ 0.016

Thank you Penny. So £260 Sounds like a plan.

Dick D

I have managed to log into the gb website. I think I need to delete some cookies that have landed while I was on holiday in the US.