Bump for this, with the caveat that I care more about, say, accidentally donating my high-end grinder to Alph than I do about donating a smaller thing to Alph. Perhaps a "you are about to donate an item that costs more than 1000 currants, are you *really* sure?"
Or, maybe, the donation screen could be replaced with the vendors' "sell" screen: "drag item here to donate." That seems like it'd be faster and safer.