paypal dispute

Hello, does any one know, how long does it take for paypal to resolve a dispute after escalating to a claim? I'm the one that escalated to a claim because I want to resolve it asap. Was that a bad move? should I wait till buyer escalated?

 

I have a proof of postage and message from buyer (in ebay message) that buyer happy to go ahead with transaction.

item08300275270095, buyer said buy it because thought for 2 adult tickets , but iI am seliing only for 1adult and 1 child and BIN for less than face value.

Any help please, thanks