I have one we got at Petco, it was like $200

I HATE this thing, because my sliders are very old and it doesn't seal well. So I'm losing tons of A/C

If your sliders are pretty new, you should be okay. Maybe mine is bad cuz hubby does NOT read directions

I have no idea about the brand, sorry, we got it a couple of years ago for Starr
Do make sure that it has a panel you can slide in so you can cut off access if needed