yeah i thought this was standard paractice with debit cards.
even though they dont advertise it, it IS the same as writing a check. the funds are not guaranteed until the charge goes through.
you cant chargeback to a debit card as easily as a regular Visa/MC.. learned that the hard way.. IVe had to charge back on both, and the Visa/MC was next to nothing, but with the debit card its the same as check fraud, so they need affidavits and other headaches and it took forever to get my money back for something i never even got.