If they are military then you can't charge them a fee per Servicemembers Civil Relief Act (SCRA) but they must show you Orders to move.  

DEFAULT BY BUYER: In the event Buyer should fail to consummate the transaction contemplated herein for any reason, except default by Seller or the failure of Seller to satisfy any of the conditions to Buyer's obligations, as set forth herein, Seller shall be entitled to retain the earnest money deposit, such sum being agreed upon as liquidated damages for the failure of Buyer to perform the duties and obligations imposed upon it by the terms and provisions of this Agreement and because of the difficulty, inconvenience and uncertainty of ascertaining actual damages, and no other damages, rights or remedies shall in any case be collectible, enforceable or available to Seller other than as provided in this Section, and Seller agrees to accept and take said deposit as Seller's total damages and relief hereunder in such event.

DEFAULT BY BUYER: In the event Buyer should fail to consummate the transaction contemplated herein for any reason, except default by Seller or the failure of Seller to satisfy any of the conditions to Buyer's obligations, as set forth herein, Seller shall be entitled to retain the earnest money deposit, such sum being agreed upon as liquidated damages for the failure of Buyer to perform the duties and obligations imposed upon it by the terms and provisions of this Agreement and because of the difficulty, inconvenience and uncertainty of ascertaining actual damages, and no other damages, rights or remedies shall in any case be collectible, enforceable or available to Seller other than as provided in this Section, and Seller agrees to accept and take said deposit as Seller's total damages and relief hereunder in such event.

I felt a huge sigh of relief and excitement when I dropped off our first batch of mailers today.....

Their common denominator has been a need to sell and gain relief from debtMost investors understand the valuable service we provide.

XXII.DEFAULT BY BUYER: In the event Buyer should fail to consummate the transaction contemplated herein for any reason, except default by Seller or the failure of Seller to satisfy any of the conditions to Buyer's obligations, as set forth herein, Seller shall be entitled to retain the earnest money deposit, such sum being agreed upon as liquidated damages for the failure of Buyer to perform the duties and obligations imposed upon it by the terms and provisions of this Agreement and because of the difficulty, inconvenience and uncertainty of ascertaining actual damages, and no other damages, rights or remedies shall in any case be collectible, enforceable or available to Seller other than as provided in this Section, and Seller agrees to accept and take said deposit as Seller's total damages and relief hereunder in such event.

As much as you are able, donate to the relief effort on this storm.

Also when they file BK they breathe a sigh of relief and do not want to sell until they lose that protection.

In the event that litigation results from or arises out of this Agreement or the performance thereof, the parties agree to reimburse the prevailing party's reasonable attorney's fees, court costs, and all other expenses, whether or not taxable by the court as costs, in addition to any other relief to which the prevailing party may be entitled.

What they want is relief.