A silly way to say this is paid an "allowance"? Do you just go and get what you want within reason?
Do you ever ask "permission" so to speak?
If your DH is a SAHD the same questions would follow
1. I don't get an "allowance" I just get things that I need and spend a small amount on myself from time to time because we don't have very much fun money for now.
2. Answer above*
3. I do ask my husband though he doesn't care I still always "consult" him so to speak if there is a big purchase.
4. We are both open about every little dollar we spend and we both our on the checking account we use an online type of bank to see all transactions.