Can a seller back out if I change lenders?

[Josh Widener]

Hello

I just received a termination notice from a seller with whom I was in contract with on a duplex. We agreed to terms on repairs after the inspection and I received the termination a few days later with the reason being that I changed lenders. I know the real reason is that they decided they did not want to pay as much as agreed to but gave the excuse of the lender change. Is this a legit legal reason to back out? 

Thank you