D..
Glad you put the question back. Hope you don't have more snarky answers. My answer the last time (or something like it) was to tell her that not everyone is comfortable discussing what they pay for stuff. And if she presses, tell her point blank that YOU aren't comfortable talking about how much you pay for stuff.
About the double-dipping - ick. Pick up the dish she has done that on and ask her to please not double dip or lick utensils that other people are sharing. No O. wants to be exposed to others' germs. She might not like you pointing it out, but everyone else will be SO relieved!
Dawn