Need your advice (Patreon)

Hello! I want to add a tariff for watermark-free images in the future, but I'm not sure of the best way to implement this considering the limitations of my current Patreon functionality and interface. I'd like to create a new tier, perhaps priced at 20-25 euros (I'm not sure about the exact price yet).

I see three potential implementation options, but they all have drawbacks and limitations:

1. I create a new tier and, let's say, I post with links to all the previous content. A new user subscribes, copies all the links, and then requests a refund. Not an ideal situation.
2. I create a new tier and make a separate post for each old post with watermark-free links for users with the new subscription (which might clutter the feed).
3. I increase the price of the existing tier (Prime) and update the links in each post to watermark-free links. As a result, many users might not be able to afford it.
4. Implement it through Discord, but only 25% of subscribers are on Discord.

Are there any other implementation methods that I haven't considered? Please advise on how to proceed. Also, what price range would be acceptable for such a tier?