I have these exact flares (from the same seller). I bought and installed them last summer. I'll try to get some pics up for you.
Seller sent me F150 flares first, but I finally got the right ones. It came with no installation parts or instructions.
I used 3m tape on the top edge and sheet metal screws with fender washers on the bottom lip.
They were in kinda rough shape when I got them and not a perfect fit (still haven't installed the door trim piece), but they look good now and do the job. They are very durable and I'm happy with mine. It provides about 3" of extra coverage. It is a really aggressive look; make sure you have (or plan to have) tires/lift to match.
For $150 bucks you won't find anything similar. Expect to typically pay around 500 to 600 for anything similar. Overall, I recommend them.
I hope that helps. I'll try to get some pictures up later.