Why do you spend hours, the money back guarantee, is basically the same as it has always been, and if used correctly seller has to refund within 3 days. Depending on how you paid also determines how long it takes for a refund to come through. Debit card up to 7 days, credit card up to 30 days.
The difference in their wisdom ebay now allows selling for free, and buyers pay for the so called protection.
In practice sellers unless they pay for promotions, are finding selling hard going, but ebay thinks it knows best.