It does seem like Ebay is trying to rid itself of the very core that made them with this 'buyer-centric' viewpoint. I kinda see why in a business sense. They'll always be sellers IF there are buyers so keep the buyers happy at all costs.
Personally I like the little shops though. I've been buying lots of little electronic components, shipped from HK. Mostly because of the cost. I can get 100 LEDs, delivered for the price of 5 in the UK.
As for the alternatives, All the ones I can think of have been mentioned. I do think that eventually Facebook will notice the opportunity and may start an ebay rival at which point other large companies like Google will kick in too.