After you file

When using a discount link or coupon from a coupon site for Turbo Tax, you must be signed out of your Turbo Tax account and then go to the discount link or coupon on coupon site and click there and then sign into your Turbo Tax Account through them, the discounted price will then be activated and show up in Turbo Tax.  It is not an unprofessional thing for Turbo Tax to offer a discounted price for their product, you just have to know the correct way to access the discount.  You could have called Turbo Tax and asked a representative and they would have told you how to get the discount.