Is the post-sale process for an Amazon FBA store more convenient compared to an FBM store?

Compared to self-fulfillment (FBM), sellers find that handling post-sale issues with FBA (Fulfillment by Amazon) orders is relatively easier. However, one key aspect to be cautious about is the return process. Due to Amazon’s A-to-Z Guarantee (which generally includes a 30-day return policy for most products) and the ease of returns facilitated by FBA, there may be an increase in the return rate. This raises the quality requirements for the seller’s products and introduces new challenges in managing the store's order processing.