Ive come across this site called www.swivel.com and it seems like it pretty much has graphs for everything.
i just found the site and i was sifting through it and found some interesting game development data, i really havent seen much as far as game development costs, till i found this.
http://www.swivel.com/data_sets/show/1001472 (click on download spreadsheet)
games with corrosponding development costs/time developers/contractors and lines of code








