I wouldn't call his cards exaclty cheap.
But given the labour he puts in developing the cards, the current market prices and the fact that you get a brand new card instead of a used one, makes me think his prices are fair for what you get.
However, if you think you can get a v5500 DVI for $400 or less in a realistic timeframe, I get why you want to wait 😉
430HX/P1 233MMX/64MB/S3VirgeDX,Voodoo1SLI(King Shaman)/AWE32
440BX/CelTualatin1400/512MB/Banshee, PowerVR PCX2/AWE64Gold
645DX/P4Northwood 3,5Ghz(Oc)/512MB/Voodoo5500/Vortex2
875P/P4EE 3,4Ghz/1GB/GeforceFX5950/Audigy2ZS
Z97/i3-4370/16GB/GeforceGTX960/X-Fi