Allow me to answer some of your points.
Collaboration is enabled even in the free plan! You can collaborate on public maps. I made this decision so that MapHub can be used for education, as it is used today.
Images are unlimited if you are hosting them somewhere and using the Markdown embed syntax.
Now let me tell you a bit about the price: from $6 per month I have to pay:
- VAT, which can be as much as 27% in some EU countries
- credit card processing fees ($0.5 + some percent)
- server hosting
- basemap hosting for each provider:
- HERE maps
- geo-search (OpenCage)
- email service
Moreover, all the user-uploaded images and icons are hosted by MapHub, which means paying for storage and bandwidth.
In the last 5 years, I paid all this myself and I have never put any single advert on MapHub.
If you consider $6 expensive while providing all this, then you are asking for a service that is not sustainable. When you normally see a service that is free or suspiciously cheap, they are either making a loss or are selling your data.
MapHub is strictly against selling your data or showing adverts. I want to make a sustainable service and the new pricing is a way forward to this.