As you never know when you need a spare ace in your back pocket. Plus, instead of being rude and having them come back at you rudely, this may just be an opportunity to further see if you can come to a better arrangement?
1. I'm sorry but it is not a priority for me at this time.
2. My schedule is up in the air right now, I'll need time to sort this out.
3. I would prefer if you could offer another option.
4. I don't love your proposal, which means I'm not the right person for it.
5. I love your suggestion, but my intuition is telling me that I'm not the person to accept this.
6. I would love to say yes to everything, but I'm not comfortable compromising that much.
7. Thank you for the explanation of your requirements. There most definitely is a person who would accept this arrangement. Unfortunately, I am not the person.
8. My instincts tell me that I am not suitable for this arrangement.
9. I am seeking an arrangement that is equally balanced to please both parties, and what you have offered would leave my happiness less than desirable.
10. Thank you for your time, I've enjoyed our communication, however, I do not feel that it is in our best interests to accept this proposal.
Be nice even when they are rude, as you never know when they are testing you, and when it could come back to haunt you!
I have had low ball and strange offers, politely declined them, only to have them come back with a seriously better offer as I handled myself as a lady ;)