Amazon has the ConairMAN Hair Cutting Kit for Men (HC900RN) on sale for $30 with free shipping on $35+ or with Prime.

Cutting lengths include 1/8", 1/4", 3/8", 1/2" (those are guards 1 - 4 in barber-lingo). Also comes with a storage pouch, barber comb, oil, scissors and neck brush.