3rd party content will have a higher price, precisely because they're paying DTG to publish it for them. Its standard business practice. The higher price allows them to recuperate that loss. Otherwise they wouldn't be making money at all.
If its a route your Happy with No problem i paid 32.99 Wcml-North & the detail they put into it was worth it
They have confirmed its selling price when they announced its release date last week release date Tuesday 18th March with a Selling value of 29.99gbp
I've read it all now how on earth is this price fixing. There was someone on here a few years ago threatening to go to trading standards. They wriggled out of it when people started to encourage them!