None, whatsoever. The advertised price is the price you can expect to pay and that’s all. However, each domain purchase is subject to applicable taxes and ICANN fees which are completely standard. At the time of purchase, you will see the exact total you can expect to pay when checking out. If applying a discounted offer, you will also be notified about the limitations of the offer as well as if there are any pricing changes to anticipate in the future for product renewals.