First Time Wholesaler Question

[Erica Rome]

My husband and I are brand new to wholesaling and we have a situation we aren't sure of how to handle because we haven't heard of it before. A seller we had sent a offer to has sent us back a filled out but not signed contract for $6,500 less than what we offered for the property. He said the following: 

"I am sending you what four other prospective buyers have received.

I got a specific Power of Attorney from my wife before she left for California.

REMEMBER NO CONTINGENCIES."

We are confused if he sent all of the prospective buyers the same contract for the same price and is just waiting for the first buyer to sign it and email it back? We also don't know what a power of attorney has to do with this. 

We appreciate any help!