It's limited to 4000 copies, sealed copies will become very rare eventually, I can't imagine the price going down. I'm not sure if I want to keep it sealed or not, though. I might just open it and keep it forever. I really don't know what to do with it.
Given how nice the standard looks at only $20 and how readily available it is, I personally wouldn't pay over $100 for the nearly identical, un-numbered, un-signed CE. But seeing a few posts like yours from people who have to have it (assuming they are not resellers with listings already on ebay trying to generate hype) shows there is a market for it, and zelda stuff generally is a good investment.
But I have to say dark horse knew what they were doing printing out these extra 4000, and knew exactly their gullible audience they were trying to screw over, and handled the out of nowhere preorder situation horribly. Since they don't share the ebay prices profits, I guess they do it to create desire for their brand and future releases.