Yeah a lot of the ones on eBay are way overpriced. There are some I see that seem to be extra inventory or something, that aren't bad prices, for new ones. Probably cheaper than if you tried to order it from somewhere.
In most cases, you can get one cheaper directly from the manufacturer than what the eBay listing will cost. If you'd want, put together a catalog # for an AEL series 11, GE 201SA or Cooper RMA and I can get a price quote for it.