Amiga and "fair and reasonable price" cannot go in the same sentence.
An RTG gfx card will set you back anything between $200-$450. Picasso II would be the cheapest although one with a scandoubler is recommended (CV64 / Picasso IV)
I doubt anyone would sell their Deneb's as they are so new so expect to pay rrp $185.
X-Surf III's usually sell for about $120-140, but you can pick up a Hydranet AUI network card and a AUI->10BaseT Tranceiver for much less.
You'd be lucky to have change from $550
The best deals can be found on the Polish equivalent of Ebay.
