Folder Maintenance
First of all I enjoy this site very much. When creating a folder, as I enter cards have them appear in numerical order no matter the order in which I place cards into that folder. Also be to be able to place what information I want to keep track of for example: Name of Card and set as shown already. The number of cards. Raw values and Grade 10 Values and then the option to remove and edit.
Sort wise. You can filter your collection to a specific folder and then change the sort order. Alphabetical, Date Added, Card Number, etc.
You can see the total value for your folders and the value of each item in that folder. You cannot see the values for other grades in the collection view, but you can see that by clicking on the item to see the price detail page.