{"product_id":"payment-callback-middleware-repair-sprint","title":"Payment State Repair Sprint","description":"\u003cp\u003e\u003cstrong\u003eStore currency:\u003c\/strong\u003e Hong Kong dollars (HKD).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDelivery mode:\u003c\/strong\u003e Remote digital service or scoped implementation. No physical shipping. Standard checkout collects billing details only.\u003c\/p\u003e\u003cp\u003eBounded repair sprint for broken payment state, callbacks, reconciliation flow, or middleware that has already become fragile.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBest when billing logic is too risky to leave half-manual.\u003c\/li\u003e\n\u003cli\u003eFocused on repair and continuity, not generic fintech talk.\u003c\/li\u003e\n\u003cli\u003eCan sit beside CRM, learning-platform, or seller-side payment flows.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sell.Systems","offers":[{"title":"Default Title","offer_id":53483271127353,"sku":null,"price":13800.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0882\/9658\/7577\/files\/payment_callback_middleware_repair.png?v=1781828489","url":"https:\/\/factory.sell.systems\/products\/payment-callback-middleware-repair-sprint","provider":"Sell.Systems","version":"1.0","type":"link"}