YOu can get a good helmet for a $100 if you look around or get last seasons model online or on sale, i have about 12 helmets road and trail, its a sickness, but when you see a bargin just grab it, i should sell them off as i only have one head. i can sell you a spare cheap if'n you want a ride day helmet, i have a race helmet always in its bag, and a 2nd i use for all club rides or practice day, that way i know my race one is perfect. its a good habit to get into.
A helmet rule of thumb is 7 years life, thats assuming you dont leave it in the sun all day between motos and the lining and foam is sound. Check the foam and buckles for damage and rust, you would be suprised how many buckles i see rusting from sweat, and they are ruined once the rust takes hold.
Old trick i use is to slip a panty liner at the front of my helmet or across my crown before a ride, soaks up all the sweat and youll be more comfy and your helmet will last forever ( so to speak) also its not wet the next time you go to put it on.
You can make up your mind if you need wings or you want to be discreet