I wasn't certain if I was being too sensitive, since my DF volunteers to everyone what he paid for anything.
I have no problem discussing where I found the best price/service/selection, etc if the person asking is interested in acquiring one themselves. When the questions become really persistant, I usually do ask "are you in the market for X?" But if we're amongst a group of people, I will usually ask them to contact me later, when I will give them the specific info. Cause really, who else wants to hear all the exciting details of sofa shopping! But I've had people respond - "no, I'm just curious what you paid for it".
But I have a few friends, friends of friends who do this:
Friend - That's such a lovely sweater.
Me - Thank you! Actually, it's new.
F - I thought so, I haven't seen you wear it before. Where did you get it?
M - From Sweater Store while I was at the mall on my day off. (as I'm writing this down, I've realized this is where I need to learn to insert redirecting question, such as - There was such a great selection, have you been there recently?)
F - Yeah, how much was it?
M - Um ... not too much, I found it on sale.
F - Really, how little - like 20 bucks?
Why is the price so dang important???