There is nothing that turns a date off more than a cheap skate.  If you are going to take a date out for supper, allow her to order whatever she would like off of the menu.  If you can’t afford to do that, then maybe you should take her to a restaurant that you can afford.  But, DO NOT take her to a restaurant and tell her to keep it under $XX.  She will remember the meal but not in a positive way.