Merchants on Ark average 12% added revenue from one-click upsells. Here is Ark on your own Stripe or Svea account next to Shopify with Shopify Payments, at list prices for a Swedish store.
List prices for Sweden, checked 6 Oct 2026, standard EEA cards and Klarna for Swedish buyers. International, premium and Amex cards cost more on Shopify Payments and Stripe alike. Swish is not included. Ark plans are in USD, shown at 9,5 kr per dollar; Starter covers up to 1,000 orders a month, above that the store is on Growth. The Shopify store is assumed to run without a post-purchase upsell app; fixed per-charge fees on upsells are left out.