If you are looking for the a GeneratePress discount code, I hate to break it to you. GeneratePress Premium is a product worth more than its attached price and they barely offer a coupon code.
You can however avail some discount off their original price ($59 per year) during certain celebrations.
I will update this page once any such offer comes.
Above everything, GeneratePress Premium is worth way more than $59. So grab it if you are trying to build a solid website or blog.