And I believe there is a time limit after you purchase something on the blog. I think you have to re-purchase it after a month or so. I don't know the exact details, but that has been my experience.
It would be handy if the history had a search function.
It would help to search on 'purchased' or 'transferred' [for example] - and be able to reduce the amount of scrolling required to check or confirm something... 🙂