First of all, rednova, I'm not looking for a 2Gig hard drive. This is an Amiga, not a PC.
Both my Amigas (1200 and 2000) have 4 gig drives. Start collecting games and demos, and you'd be surprised how fast that goes. I have 300 megs of games and about 400 megs of demos.
Second, we're talking about a computer that's what, 20 years old? Good grief, I wouldn't spen that kind of money for a hard drive for my PC let alone for an old 200MB HD for an A500. The problem with places like Ebay and flea markets is that people think they have gold. In the hunt for the almighty dollar folks have forgotten just what it is we're dealing with.
Well, while you're probably right feeling that way, you're also dealing with machines for which there is a thriving collectors' market, and regardless of whether or not these things actually are worth those prices, there are idiots willing to pay those prices. So, unless you find a seller who's never been exposed to a buyer willing to drop $200 on a 20 year old hard drive, there's not much you can do.
Your probably thinking "Yeah, well that's why we're called ENTHUSIASTS". Well, I'm a huge Amiga fan, but if spending absolutley mind numbing amounts of money on 20+ year old computer parts is what is required for the title of enthusiast, count me out.
You're probably counted out then. You will almost certainly not find what you want online. I and others have found old Amiga/Commodore parts by asking friends (who often are willing to give the stuff away free since they consider it junk) or check flea markets and pawn shops... though you may go years without seeing a single Amiga item at those shops.
Your choices are really limited to one of:
* Pay the prices on ebay or a collector's shop
* Find somebody who doesn't know what the stuff sells for and get them to give it to you for free or cheap, either through a friend, flea markets, or yard sales
* Build your own hardware
Get it expensive but quick, get it cheap but slowly (read: years), or learn enough electronics to make your own.
You'd probably be able to find an Amiga 1200 or 2000 with a hard drive for WAY cheaper than an Amiga 500 hard drive.