<prompt> Human: We just found a house that we really like but before even making an offer it was required that we get a pre-approval from someone at GuaranteedRate mortgages that the seller specified. We got the pre-approval and then we made our offer. The seller likes our offer but in order to proceed they have two conditions:1. We close within 35 days.2. They would strongly prefer we use their guy at GuaranteedRate.Were fine with condition 1 but condition 2 worries me. We have pre-approvals from Wells Fargo and Chase for better rates and we know the people there. Our realtor tells me that the reason for this weird stuff is that the seller is a builder and they are trying to close quickly perhaps to get cash to work on another house or something. Both WF and Chase are telling me this is a fairly strange arrangement and Im inclined to agree. My realtor suggested I get something in writing from WF or Chase to assure the seller that we can close in the time frame they want. Did that, WF and Chase said they would both happily speak to the seller if further assurances are required. Should I be worried?Assistant: Whats in it for you to use that lender?Human: Nothing except appeasing the seller.  <response>: Then it doesnt sound worth it at all. Use the lender with the lowest rate. 