Well, a plain A2000 with working floppies would get you maybe 20-30$ on the optimist estimate. However that controller card is possibly not only a controller for the 5.25. Probably it's a PC emulator/bridge board, and it may add some value depending on its specs. The biggest problem is, you're in Norway, and possibly this nice A2000 too, and if you try to sell it overseas it will cost an arm and a leg to ship (from what I've heard of Norwegian shipping rates).
If you can identify and sell the bridgeboard seperately it can fetch more price than the A2000 itself.
