Even if its past 14 days couldn't you exchange it in the store for the one you want? Here's the policy from
Gucci: Did you get a bag that was on sale? If it was normal price you should be fine to exchange it.
Gucci wants to ensure your complete satisfaction. For Gucci online purchases, we will accept merchandise in its original condition for a full refund or exchange when accompanied by the original sales slip. We will not accept merchandise that has been worn, used, altered or damaged. Refunds may only be issued in the same form as payment. Full-priced merchandise must be returned within 30 days from date of delivery; however, sale merchandise must be returned within 15 days of delivery. Online purchases may not be returned or exchanged at our outlet stores. Shipping costs are non-refundable. Please note that a different return policy may be applicable for in-store purchases.