so based on those numbers she paid $300,000 when she bought it and the vans were newer... doubt that. Her numbers are way off.The first year the current owners had it they grossed 350000, last year I think it was 150000. She's asking 120000
I would suggest that she get a professional appraisal. Shes the seller so she is the one that has to verify her number.
Basically she just pulled the number out of the air.