That is the best way Mustafa asking people can I offer you a little idea to further make this more useful and productive if I may say.

I would like to recommend surveys! You can use sites like Survey Monkey or Google Forms and when you ask people give them a survey and ask what price range they like the best and maybe that way you can collect the data from the surveys and get the most optimal price for your packs.

Good luck Mustafa I know you will be awesome!