Major credit and debit cards, plus Apple Pay and Google Pay, through Stripe. The sale is made by Link, which acts as merchant of record, so your statement will show LINK.COM* rather than CardNest — worth knowing before you wonder what the charge is. Your card details are entered on their payment page and are never sent to or stored on CardNest's servers. Pro is $3 per month or $30 per year, and there are 20 binders and 50 pages per binder in it.