Thanks! Package storage will likely make it into the next big update, and definitely agree on the desk upgrade gripes -- it's on the to-do list :)
Thanks for the bug reports, there's a lot of weird edge cases to consider. If you ever reproduce them, let us know/send screenshots. We'll look into the postage issue, the scale has been a particularly lovely treasure trove of bugs. Wahoo.
The quit game button is on the last page of the rulebook, as of 10min ago :D