It seems this has been answer already, but in case this helps future readers, I though I’d share how the price system is designed.
- If you set your project to paid, people can pay that amount to own your project. That means, no matter what happens to the price of that project, people will be able to gain access to its files. (Except individually priced files, see below)
- Individual priced files are intended to reward people that support you by paying more than the project’s price and they work in a tier system. For example your project is set at £5, extra soundtracks are individually priced at £10 and some behind the scenes files for £15. That means that if someone pays £15, they will have access to your project plus any files with an individual price of £15 or below.
Having the game set as free, but in reality the full version is behind an individually priced file is not the intended way to do this. On top of the issue you mentioned on this post, this also confuses the algorithm as it displays your game as free to play which might not be the best experience for users.
I see you mentioned DLC on some comments. As far as I’m aware there’s no official way to do DLCs, but some other people have created new project pages exactly for that reason, with a link on the base game for users to find. This should eliminate pretty much the issues you’ve been having, but it’s up to you to decide what works best for you.