I had a DC today with the 2 options of: 1) a bunch of boost potions or 2) an insignificant amount of coins that I do not need.
Know what I did? Sighed a bit and said: Ugh, these prizes suck today. Well, at least I can set everything for 8 hrs and not log back into the game for...8 hrs. No GE, no DC, don't GvG, don't attack the hood.
It's always nice to have a day off. If the prize is something, no, better yet, a CHANCE at something I want, I will go for it no matter what. I don't care if I have to negotiate, collect tavern silver, and punch a cluster of kittens. I'm getting that DC done and hoping for my prize.
If you think the negotiating costs too much because the prize sucks (oh yeah, 6000 coins!!!!!), don't do it. If you find that you don't want to spend your precious goods because they're just that, precious, then you need to rethink your city and goods production.
If I could, I would delete all my current and previous age goods just to prove to some on this forum that a properly set up city can make more than enough goods in a day to do whatever they want or need to.
I could literally delete all my excess goods every day, and still have enough for DCs and GE. Easy.
Always choose them- even if they are crappy. Then decided whether or not you will complete them. Sometimes they are super simple and don't require me doing anything different (spend FPs, collect goods/supplies/coins, etc...) If you luck out with an easy one, you are 1 closer to the Challenger's Chest.