I Got Chargeback Scammed

[Undedzer0]

Could somebody help me out with this?

I sold a user on Steam TF2 keys for $1.89 each

After recieving the keys, he requests a chargeback, and now im in the negative with money.

I have proof that i've given him the keys, though.

Heres an image of the Chargeback

 http://imgur.com/UNjtYso,MGSTpyB

Heres an image of me sending him the keys

http://imgur.com/MGSTpyB

Heres a video of my giving him the keys

https://www.youtube.com/watch?v=NyeZOyF_E28

Anything I could do to reverse this Chargeback? I know somebody else who was scammed by him and according to his profile on backpack.tf, the account he traded me was an alt account of an alt account of an alt account (and so on). This means he has charged back many people before me. I'm probably able to prove is furthur, but i need the help of an actual person, which I doubt I can get.

[kernowlass]

Not a lot you can do.

There is no seller protection on paypal for virtual items.

You can sell them but at your own risk.

[Undedzer0]

Not a lot I can do, but what can I do. 

I'm basically **bleep**?

[kernowlass]

OK then .....nothing you can do