The absolute cheapest way would be to pick up a cheap 486 or pentium I laptop from somewhere (don't pay more than $30) and use it via a parallel port cable or null modem cable to act as a file server for your A500. I'm thinking of something like Amiga Explorer or the old Siamese system. Essentially, the laptop would be like an external hard drive for your A500.
Heheheh that is what I did! (And I think he can score something much better than a 486!)
In 2004 Fry's was selling complete brand new PC's for $99.00 on National Capitalism day. They had 2 PS/2 ports, 4 USB ports, a VGA port and PAR port but I used the Ethernet port instead because Ethernet is massively faster than PAR and my A1200T has a PCI Ethernet card in it that I got for free (they typically sold for $5.00 back then). It came with a 40GB hard drive, mouse, keyboard and a complete garbage set of speakers.
So I bought the PC and an Ethernet cable and networked them together so my pc could be the file slave of my mighty A1200T. MUAHAHAHA!

I have been buying CHEAP-O hard drives for the PC ever since. Using a stack of 2TB drives nowadays. My ethernet card is a crappy 10 Mbit one so can't do more than 1000K / second max. I forgot to upgrade to Ethernet 100 Mbit. Silly me.
But in any case, if you are going to store your media across a parallel port anyway then you may as well use a cheap PC. I am sure you can buy a junk PC with a 40GB hard drive in it for really cheap. My 40 GB pc was $99.00 brand new (it came with a 1500 Mhz cpu and all the ports listed above). I still use that computer right now. $99.00 in 2004 should mean like FREE in 2013.
If u do a parnet to pc solution you should end up with 37GB or more of storage space for your Amiga. + u can add more hard drives to the pc. Like just throw a 2TB drive in there when you get the $$$.
Like the other poster said, only pay $30.00 or less for such a PC solution. You will get tired of the slow speed after a while. A 7.15909Mhz 68000 can only drive the PAR port at a certain speed.
You could get one free if you had a lot of friends you could ask.
Check Craig's List
Check Freecycle Ppl throw away old PC's all the time. They are too slow to play "modern" games on so ppl just toss them in the garbage.
Go to the local churches and post up a "HELP I NEED UR OLD JUNK PC CALL ME AT 123-456-7890 THANX!" This method might take a few weeks for someone to notice the note you posted though. My brother got an old junky laptop free that way. It prob has only a 10GB drive in it tho and Windoze 98 probably. He tried to give it to me but I didn't want it. I will ask him if he still has it , if it is broken, if it has a par port. I think he threw it away when he moved. If he still has it and it has a PAR port I will mail it to u if u r in USA, else maybe.
