Shopping credit post time?

I bought an Apple TV from apple.com through the link yesterday. I should get $3 or something from that back. How long do shopping credits usually take (it throws me off not having it on the pending list like offers)? I know they typically take longer than the offers, but is it usually a few days or a week or more?

That should show up as pending within about 3 days. If I am REALLY busy and it is a company that doesn't post until it ships, it might be 7 days. But when it does post, it will date back to your purchase date. So you still get your credit 21 days from the purchase regardless of when it posts.