The seller is requesting to see foundation estimate

[William Kelly]

During our option period we are buying a duplex as is. We originally offered 205k but after foundation, plumbing, electrical and mold found our new asking price is 172k. The seller is now requesting to see the estimates from our contractors and foundation specialist. 

Should we give them these estimates or no? (The estimates aren’t super expensive and come out to around 15k so I also don’t want the seller to know how much profit we are going to make on this duplex once we turn around and rent it.)