(US) Looking for Lego Avengers #6867 & #6869

CircleK

I'm now regretting not picking up a couple of the Marvel Avengers sets and hoping somebody has a couple they are willing to part with for a fair deal. I'm looking for the following specifically:

#6867: Loki's Cosmic Cube Escape
#6869: Quinjet Aerial Battle

I would prefer the sets be NIB, but may also be interested in non played with collector owned condition. I can buy if the price is right, but also have the following sets for trade. All are NIB with varying degrees of shelfwear:

Star Wars:

#9495 - Gold Leader's Y-Wing

LotR / Hobbit:

#9472 - Attack on Weathertop
#9473 - The Mines of Moria
#79006 - The Council of Elrond

#79002 - Attack of the Wargs
#79003 - Unexpected Gathering

Super Heroes:

#76008 - Ironman - Mandarin Ultimate Showdown
#76004 - Spiderman - Spider-Cycle Chase

Creator:

#7347 - Highway Pickup

MIsc Polys

#5001622 Lego Shop Employee