If you're willing to go into NY State, try The Savory Grill in Highland Mills (about 45 minutes away from Wayne).http://www.savorygrill.net/Savory_menus.htmlThey have a lunch menu for $18.95pp before tax and tip. FI's family has most of their bridal and baby showers there and it's always been very good.
Portobello's in Oakland. I forgot how much it was but I do remember it wasn't expensive. Also Kopici in Bloomingdale. He works with you and your budget.
definitely try the Regency House. My shower was just there and we have a lunch/dinner buffet and I believe it was $22 a person. At first I did not want it there but I have to say everyone is raving about the food and they just remodelled and the room was really nice. The wait staff was super fantastic. Two of my friends are booking christenings there because they thought the shower was so nice.
Re: Affordable Shower Brunch