Some feedback on 0.4.4:
Choosing a sensitivity seems broken. You can choose any number of sensitivities and you cannot unselect a sensitivity once chosen. Radio buttons are being used incorrectly here. A set of radio buttons are supposed to share the name attribute, among a set of radio buttons with the same name only one can be selected at a time and selecting a new one will unselect the old selection. Currently each radio button has a different name, so this doesn't work. If you're supposed to be able to select multiple sensitivities then you should use checkboxes instead of radiobuttons, so you can unselect a sensitivity by pressing it a second time.
Another thing is that I cannot see a way to see what an item does before purchasing it from the witch. That's quite frustrating.