Unfortunately it can take a few days for the authorisation on your account to clear, so unless you have enough available funds for a second MacBook, you'll need to wait till the authorisation clears... it's sucky I know, so you might want to be very sure about purchasing from the store vs letting your online order ship.
Thanks for that. Meh- think I'll leave the current order alone then. Doubt it's worth the hassle over the difference of a few days
unless you have enough available funds for a second MacBook
Nope!