(I realize this is an old post but this info may help someone else)
That sounds like a hold the bank puts on your account. It could fall off your account in 3-5 business days depending on your bank. I would contact the bank and find out what their policy is.
Usually when a card is used a pre-authorization temporarily holds that amount assuming an order will be placed for that same amount. Sometimes the same exact amount does not come in (i.e. if there is tax added to the final order). So you may even have a charge as well as a hold. It really depends on the bank's policy.
Hope this helps you understand what the pending charge is and how it may progress.
