Well I guess it depends on how much you are selling. If it is $5 profit after all of your costs and you are able to move 10-20 products a day, that isn't a bad side income for a few hours of work. However, if you sell an item on ebay for $5 more than you paid but offered free shipping then after all the fees I would say no, it isn't worth it because I doubt you make more than $1 each. If it is a small item you can save some on fees by listing it as an auction for .99 cents or less. No listing fees there for your first 100 items. Also, if most of your transactions tend to be under $10 then I would switch your paypal account to micropayments. You pay a higher percentage per dollar but the flat .30 fee is replaced with a .05 fee instead so for anything under $10 it actually works out to be a little less in fees. Still, it is a lot of hassle for not much $$
It depends how much work you need to put into it, and how often you can do it. If it's something that takes more than half an hour of your time to do, you're making the same as you would working at McDonalds... if it's completely automated and doesn't take any of your time, then it's basically free money because you're not investing your time to do it. Not eBay related, but there was an affiliate program I used to promote that paid me $1.50 per lead... not a huge amount of money, but I promoted it in a bunch of places and then let it coast... it generated a pretty steady $50-$60 per month until the company was sold and the affiliate program shut down a few months later. Had I just looked at the $1.50 per lead I likely wouldn't have bothered, but since it was so easy to automate, I let it do it's thing, and it made me several hundred dollars. Not bad.
