Short Sale 问题请教

~3 months ago, we made offer on a short-sale home in a very distressed area.  It was listed for $132K, our agent said it's a short-sale approved by lender for $145K, so we have to offer $145K or above.  We offered $145K. similar home were selling in the $140K-$155K range(almost all sales are either short-sale or REO)

Today we're informed that lender approved our offer.  Here is main content of the approveal letter:

net proceed to lender: $131,680

sale proceed distribution:

gross sale price: $145,000

commisions: $8,700

total closing cost: $1,620

negotiated 2nd lien release(if applicable): $0

relocation asst(if applicable): $3,000

extension fee: $0

We tried to ask for seller concession earlier, but listing agent firmly said NO, she said lender want $145K net in order to have the offer to go through.  But now we have the approval letter, it clearly says lender need net of $132K, which is same as original list price.  So we're now wondering if our agent & listing agent tricked us to offered @$145K. 

Any short-sale expert out there can comments?   

BTW, home price in the area is still droping, redfin.com chart shows $/sq-ft sale price droped ~5% over the last 3 month period.  Although our agent still think there should be no issue to appraise this home @$145K. 

Another question is, since the lender needs $132K net proceed, that leaves no money left after commision, etc.  So if later inspection and appraisal do find issue and need to be fixed, will the lender agree to buyer's request for reqpair? 

thanks again for comments!