What is the difference in price between conventional insulation and foam ?
On a typical home it usually costs about twice as much. There are several factors that can control the cost such as a home on piers that would require insulating underneath, how thick to be applied , single or 2 story, roof pitch, etc.
Then couldn’t I just save my money and go with fiberglass ?
True. You will save on the installation but you will continue to pay every month to the utility company and unless the utility companies give away their services you will be paying forever.
Ok then how long till your product pays for itself ?
A conservative estimate would be 5 years. It would depend a lot on your life style and whether or not the utility companies raise their rates (they wouldn’t dare)
OK lets do some math. You are getting a new home built. Your new home is 1800 sq ft .and will cost $175,000 with fiberglass insulation. Using open cell foam the price is $178,000. On a 30 year mortgage at 6% your fiberglass house payment is $1050 per month your foam house payment is $1067 per month. $17 difference. Now forgetting all the other benefits of foam insulation if you can reduce your energy bill by up to 50% you will save more than the $17 dollars a month.