Sleeping Dogs LE from Greenman Gaming

Sadly I didn't get the TF2 stuff because there was a huge mix up with the keys and a lot of people ended getting the keys later on release day so a lot of people such as myself lost out on getting the TF2 stuff.

I bought it via retail store, it was 288HKD, roughly 37USD

It contains 4 DLCs, and no TF2 items yet(?)

I think it does not contain. Same is with awesomenauts, bought on steam - hats to tf2, i've got from GamersGate and i do not have ;C

No, you don't get the TF2 items since the offer is over.

the tf2 items is a steam only offer

I activated my key day of the Steam release. I only launched TF2 yesterday and noticed I got all the TF2 preorder items.

Apparently in the case of Red Orchestra 2 where people received TF2 items from the GMG key, is because of the fact that it wasn't just RO2 PO that gave the items, but the Red Orchestra 2 - Digital Deluxe Edition as well.

In the case of SR3 and Sleeping Dogs, I would not expect the items and if you receive them, consider yourself lucky.