in the email you get from ebay it should have one of two subjects - "Sale Confirmed:" or "Your ebay item sold!" Once you received the "Your ebay item sold!" email, you're supposed to post. alternatively, if it shows as "awaiting postage" in your my ebay dashboard you should also post. 

the funds will show as "pending" in your "Payments" (the managed payments) tab, but the funds are being processed on ebays end and they have received them. 

that's my understanding anyway.