I think it's better to use BTC-e codes to load your account with Bitcoin
How to buy these BTC-e codes via Bitcoins (balance Bitcoin Core) outside advcash?
Safely!!!
Go to BTC-e, open a new account, deposit your bitcoins, trade your bitcoins for USD on their trading platform, go to your account wallet and then go to the withdrawal section for bitcoin. You should see an option where it says withdraw to btc-e code. Simply select the amount you want to withdraw and a new code is generated for you.
Even with the new fees on advcash i don't think it's worth the trouble and the hassle to go to get btc-e codes first. No point in doing that when btc-e rates could be worse than the rates advcash is offering, and btc-e has its own fees.
I'm in the UK and would like to withdraw GBP cash, should I select a euro or usd advcash card?