Possible Wallpaper-Set - Could use some feedback! (Patreon)

Hey guys! I decided to release a new Phone Wallpaper-pack on my Ko-fi, but I am having a hard time deciding on which backgrounds to choose - my packs usually contain 7 phone wallpapers for 2,99€, but I am actually tending to the final set of 8...just that I have no idea what to charge for it :'D
What do you guys think? Any ideas? Should I release the last one for the same price or add a few cents?
I think Ko-fi may have added a "Pay-what-you-want" option with a set minimum price you can choose, so maybe I should just let my customers decide for themselves.