If you use Augmented Steam(which I highly recommend), you can add a direct link to GG.DEALS on the steam store page. It would be better to just see the price right there, but this is the next best thing.
To do this, go to Augmented Steam's settings and on the left click Store>App Page. then scroll down and click "Add custom link" under "Options for information from 3rd-party sites"
Add these details:
Now a button will appear on the left of every steam page taking you directly to the GG.DEALS page. Hope this helps!