All rare Amiga items sell for insane prices these days!! Just try finding a Blizzard 060 Accelerator or an A1200 Flicker Fixer/Scandoubler for anything close to a reasonable price on eBay. You wont.
Some hardware manufacturer should (re)produce these items as I'm sure there's enough demand still out there to warrent it. Nevermind NEW Amiga technology which always sells badly...people still seem to want classic hardware and there's obviousely a market for it judging by the frenzied eBay bidding!