It can be a bit time consuming, but if you wish to achieve the best price, then I recommend you dismantle the Amiga and sell each part individually including the games. To find the current market value of each part do some research on eBay using the "completed listings" to give you rough estimate of what your hardware and games might all be worth. You might prefer a quick sale, or for the Amiga to go to a good home, however just beware that the Amiga scene is crawling with resellers these days, so if you don't take the time then someone else may have already done the math.
Also as others have said be 100% sure you won't ever want to rebuild a similar spec machine in future, even though your hardware is modest, finding the parts might be difficult, prices keep rising and if Elbox should ever go out of business the resellers will move in and triple the price of that hardware overnight.
Good luck.
