This is terrible. They take 50% of sales, a $2 withdrawal fee when you want to cash out. Those on their own are giant red flags. 50% is borderline insane. You never pay a digital retailer 50% of sales to sell your product.
On top of that, as worded, any other author can take your content, put it in their own product, and sell it because they get it licensed freely. Unless there's something buried in the Community Content Agreement that you need to register to even see, the FAQ clearly states and gives an example of someone using another person's IP in their own product. What would stop you from releasing a grand compilation of everyone else's material at a massively undercut price - or even free?
I want to be clear, even if the CCA does address the 2nd point - in which case their FAQ is misleading and that's a big problem since presumably the CCA will be a slog for content producers to go through and the FAQ is meant to make it easy to get into the process - that the first part is just economic abuse. You can sell your content elsewhere at a much better rate - at least 70%, and in some cases more.
EDIT: Found the relevant clause posted here -
http://www.enworld.org/forum/showthread.php?475360-The-Day-Has-Come!-It-s-An-OGL!-And-A-Store-To-Buy-amp-Sell-D-amp-D-5E-Products!#ixzz3x5kbROcl6. Waiver of Claims; Waiver of Moral Rights.
In order to prevent legal claims that could be disruptive to the Program participants or impede the ability of you and other Program authors to participate in the Program, you irrevocably waive any legal claim you may have under any theory of law in any territory that your rights were infringed due to any use of your User Generated Content by us, the Owner or its affiliates, licensees and sublicensees, and/or any other Program authors, including copyright infringement. This waiver does not apply to royalty payments we may owe you under Section 7. You also irrevocably waive any moral rights in your Work and agree not to assert any moral rights in your Work against us, the Owner, and/or other Program authors. If, under any applicable law, this waiver of moral rights is not effective, you acknowledge that your Work is subject to the licenses you grant in Section 4 without any credit obligation, that you intend for your Work to be used in this way, and that this form of use will not be contrary to your moral rights.
As worded the repercussions are exactly how it sounded before. You have no legal recourse if someone takes the entirety of something you've put on DMs Guild and reproduces it wholesale in their own product on DMs Guild. They can then price it however they want, undercutting you, giving it away free, or whatever.
The CCA is a giant mess. I would not advise any content producers to use it to sell products.