Folding tonneau cover

I'm looking for a folding tonneau cover for my 2012 GMC Sierra crew cab. I would prefer a bakflip or undercover flex. I would even consider a used one if it was in good shape. Does anyone have a bro deal on these?

I picked up two from tonneau cover warehouse for 300 each delivered. That being sad I am totally disappointed with the quality of the back flip. All the seals have gone bad in the first six months and it is warping from the sun just my experience.

I've been happy with my bakflip, 1 year old, garage kept. Best price I found was through bakflip outlet, spoke to Mourie. These are new cause I made mistake of ordering wrong size delivered. I swapped out at factory in San fernando