Yup, I agree it is a lot of work. But anything that pays off is a lot of work. I have had 5 eBay stores, down to 3 now as I move into full retirement, but only two are fully up and running. I average over one sale a day on FAA, but I will do in one week several times what I do in FAA in the entire month.
Not saying not to do FAA, not at all... I do suggest that you broaden your reach into areas that produce sales. eBay can be one of them and use the two to compliment one another.
FAA is great, I love it and as I wind down, I will end up only on FAA. But I am not trying to make a living or build a business. eBay can be a very valuable tool in conjunction with FAA. Like they say, don't put all your eggs in one basket.