I'm certain I've mentioned this before: Galaxy won't show me items (in most cases) unless I have it maximised - which I almost never do.
I got notification that a game I was after was on special (Phantom Doctrine Deluxe Edition) so yesterday I came on to get it, but all I could find was the standard version. Now I've just accidently maximised my Galaxy client I'm suddenly seen a huge sale on where before I only saw 6 or 8 items at any one time.

Really need to fix this, Dev's are missing sales.

What resolution are you running at? Perhaps it's too low?