I've had some software developed, now the coder is holding me for ransom.
huherto: $2500 will barely cover about 100hrs of effort (2.5 weeks). So a $2500 is a really simple app. If he has put that effort already consider that you have had your moneys worth.Likely, he was thinking of a one bedroom house. You were thinking swimming pool, gourmet kitchen, etc, etc. Professional software developers know how to deal with it.  The lesson is easily worth $2500.