Help analyzing flip deal

[Justin Nichols]

Hey guys I need an opinion on if this is a good deal or not.  I have a 2 bed 1 bath 647sqft house I am look at and it is priced at $18,500.  The owner is currently in the process of updating and repairing the home herself.  On Zillow it’s zestimate is around $49,000 while comparable homes range from $26-$86k.  The owner is firm on the price of $18,500.  Can you guys give me your opinion?