Affirm vs Klarna vs Synchrony Financial, which financing mix for a mattress brand?

Different lenders for different cart sizes, run all three, surface whichever has the best terms for that cart:

• Affirm, sweet spot $500, $3,000. Pay-monthly with rate quotes (0% APR promo financing common for mattress brands like Casper and Purple). Soft-pull pre-qualification on the PDP shows “as low as $58/month” before add-to-cart. Approval rate ~70-80% for the typical mattress customer.
• Klarna, sweet spot under $1,000. Pay-in-4 zero-interest splits a $799 queen into four $199 payments over 6 weeks. Best for pillows + sheets + protectors and entry-level mattresses. Approval is near-instant, no hard credit pull.
• Synchrony Financial, sweet spot $1,500, $10,000. Traditional retail financing with 6/12/24/36-month deferred-interest promotions (this is what Tempur-Pedic and Saatva default to on $4,000+ kings). Higher AOV, slightly stricter approval, but the deferred-interest psychology lifts conversion on high-ticket carts ~25%.
• Splitit, uses the customer’s existing credit card to split into 3 / 6 / 12 monthly charges. No new loan, no credit application. Conversion lift on shoppers who don’t want a new credit line.

All four ship official Magento extensions. The right pattern is a financing-widget on the PDP that shows the best monthly payment for the current cart size, Klarna for under-$1k, Affirm for $1k, $3k, Synchrony above $3k. Skip the multi-lender approach and you watch carts abandon at $2,400 checkout because the customer can’t make one $2,400 charge but can make 12 charges of $200.