So, handing them a dictionary with As-Is Underlined didn't work eh?
The buyers are going to walk all over you if you let them. Stand firm "The house is As-Is that means I will NOT be paying anything to you for repairs or anything else you can think of. The price we agreed was for the home in its' present AS-IS condition" end of story, end of discussion.
You say you have 15 days to find a home, close escrow & move out or are you renting back for 30days or so? You should consider getting a mo/mo lease somewhere or move in with family so you can find your next home a little more stress free.
Please work with a buyer agent, you can only get good faith deposits back if it is WRITTEN IN THE CONTRACT that you have X amt of days for this or that contingency (loan, inspections, etc)
Realtor Since 1996
Main Street Realtors