lawn seeding bids

[goodlawn]

I have gotten the opportunity to bid on some yards for seeding. I really don't have the confidence because I'm not sure if I'm underbidding or overpricing and losing the job. Is there a certain formula for different size yards. Would like to know.

[PSUturf]

Are you establishing new lawns or seeding into established lawns to thicken up the turf?