That's because that €220 includes a 9400GT, memory and a new 320Gb hard disk ;) .

8-series AGP cards were one-offs and made for a short time, never really saw many of them (if even saw some advertised models at all). CUDA is only possible on GPU's with stream processors / shaders, so therefor only 8-series onwards.

Edit: And check the $/GB cost of those small drives... US-side a 320GB drive costs more than double per GB than the 750GB-1TB drives.

True, €/Gb usualy decreases as the capacity increases, but unfortunatly the totaly cost isn't decreasing.
160Gb: €39 (€0,244/Gb)
320Gb: €40 - €45 (€0,125/Gb - €0,141/Gb)
500Gb: €52 - €53 (€0,104/Gb - €0,106/Gb)
640Gb: €60 - €61 (€0,093/Gb)
750Gb: €70 (€0,093/Gb)

As you can see, a 320Gb is €0,032/Gb more expensive than a €750Gb drive, but in the end it costs me almost half of what a 750Gb drive costs.

True, but it also shows the 500GB or 640GB drives would be worthwhile. The higher the platter density the better the performance too, all of my 320GB drives are slow even by HDD standards now.

€40 for 320GB or €60 for 640GB, half again the price for double the capacity. Would come down to if ya would ever even need 320GB of room I guess. :)