Depends on what you buy. I know a cheeseburger, fries and small soda comes to $8.50. Kids meals are about 4.00 i thinK. Go to www.allearsnet.com. There you will find menus for the counter service locations and prices.
We spent $20-25 per CS for two adults before DDP. Things like salads and grilled items seem to be more $$$ than regular burgers. Allearsnet.com has all the menus and prices!