The artist has put images/maps up for Hoard of the Dragon Queen, which is the big Adventurer's League storyline this season, up on his online store. The maps look great, and if all you want to use it for is Roll20, you can just download the sample image. I could probably get a better quality image from taking a picture on my smart phone and scaling it up, but this is far less work.
But do the artist a solid and buy a few. I'm sure they are spectacular at their actual size.
