After some playing around, I figured out how to download the FULL SIZE photos.
I also posted this as a normal reply but it is already on page 2 - I added it here also for better visibility.
Go to your listing and to your photo editing area.
When all of your photos are layed out in an array (where you can modify the text for each photo), click on any photo and it will open as a pop up.
Right click on the photo and click, "open image in new tab."
When the image opens, it will have a LONG URL:
https://a0.muscache.com/ac/pictures/22d6090909-xyxyxyxyxyxyxyxyxyxyxd6df.jpg?interpolation=lanczos-n...
This is a 70% size of your original pic.
Now, just go up to your URL bar and modify the 70 to 100 (%):
https://a0.muscache.com/ac/pictures/22d6090909-xyxyxyxyxyxyxyxyxyxyxd6df.jpg?interpolation=lanczos-none&size=large_cover&output-format=jpg&output-quality=100
Now, you can right click and save photo and you'll have a ~ 350 kb photo.
When you compare this pic to those saved from the public page, it is like night and day!