Hi @Seller_bEVffZ7p8XgSn,

I’ve run into similar issues with delivery times before. From what I’ve observed, delivery times often depend on factors like the customer’s shipping address, the fulfillment center it’s coming from, and even how busy the center or regional postal services are. During the holiday season, these delays can become more common due to the added stress on fulfillment centers and postal services.

While Amazon determines the fulfillment center when creating a shipment, I’ve had some success by creating multiple smaller shipments to see if they get assigned to different centers. This can sometimes reduce the distance to customers and improve the expected delivery time Amazon shows to them.

On the advertising side, if we assume a 4% conversion rate, it takes around 50 clicks to generate one sale. If clicks cost £0.20 or more, that’s £10 to generate a single sale from ads. With this in mind, how many additional sales would you have expected from your increased spend? Would that change be noticeable compared to your usual sales volume?

If so, it might be worth diving into the Search Query Report to ensure your spend is reaching the right audience—customers specifically searching for what you offer.

I know how tough this can be—it’s an ongoing challenge. Just wanted to share some thoughts in case they’re helpful.