I am currently waiting on Shopify Support to get back to me about fixing the checkout error that is not allowing payments to be processed when purchasing a Fi collar. I am so sorry for this inconvenience. If you would like to purchase a Fi collar please check out our Etsy shop linked below or send an email to alexis@beastlymoon.com for an invoice. All Fi collars are 20% off with free shipping over on Etsy until this issue is resolved. Thank you!