Entrée prices are pretty steep, even at budget-friendly BYOBs. Are entrées under $20 on the dining-out endangered species list? Not at Nicholas, a new cozy 30-seater in Pennsport, which offers a full menu of generously portioned dishes — and not one of them costs more than $20. Go for the Asian-tinged steak, marinated in miso and served with enoki mushrooms, or try the homey pork chop with mashed sweet potatoes. The menu changes weekly, but it tends to mix the familiar with the exotic. Also recommended: the huge mussels appetizer (which costs a mere $8), though it won’t leave you with much room for the rest of your meal.