You have to go the site where you bought it on that same site were you bought it they sell extra blade right there ! And ask if want to buy extra blades and just order them from there
Generally, the shipping is free of charge, except in some remote areas, please see the detailed information:https://www.vevor.com/pages/shipping-policy
The payment method is Paypal and credit card.
We do not sell parts separately. All our products have a 12 month warranty and if there is a problem with your purchase during the warranty period, we can send you a replacement part free of charge(In the case of parts that are not consumable). Please click the following link to contact us: https://www.vevor.com/pages/contact-us.