eBay is a mixed bag. On one hand some of the used gear is being sold at new, or even higher than new prices. OTOH, there are still great deals to be found. One must be savvy when shopping eBay.
One of the odd things I found on eBay is many of the big on-line retailers sell gear through eBay at a better price than if you went to their website. Or, the same price but free shipping saving you a few bucks. I've also found many of them have a "make an offer" available. They'll usually except a reasonable offer too. Again, saving you money. These retailers offer the same return policies as if you bought from their website.