If you did your FAFSA already, you should get something called a SAR...Student Aid Report. Your EFC...Expected Family Contribution...is on that. The ONLY thing this is used for is to determine your eligibility for federally funded grants like the Pell. Your EFC would need to be below $5000 to receive any Pell money at all.
Did your son receive his financial aid package from ASU already? If so, at the very least, he would be eligible to take out a Stafford loan...if he's a junior it would be $7500 I believe for the year. Any additional aid would be listed on there.
There is precious little grant money available at most schools for transfer students.
If ASU is your instate option, it might be the best deal for you. Did your son apply to other AZ public colleges? Just curious if maybe others had aid for transfer students. Did he work with the advisor at his community college in terms of looking for schools whereby his credits were guaranteed to transfer? And did they have any information about schools with scholarships for transfers from the community college system?
We had a financial aid company make a list of schools
I know it's too late to go back...but I hope you didn't pay much to this "financial aid company" for the list they prepared for you. ANY information about financial aid at colleges is readily available for FREE on the college websites.