Thanks for the update. You'll have loads more work to do in a few months.
A couple suggestions IMO. Here in US, the R9700Pro is not hard to find for $190. It should be listed in the $100-$200 class as the speed champ, although not necessarily the best buy as it is only a $10-$20 jump to R9800 Pro. I guess this varies all over, but it has not been a $200+ card for a long time here.
Also, I think the Ti4600 should be looked at carefully, based on the fact that it has been available new for $99 at times. I understand that isn't the norm though. All I'm saying is in the near future, keep an eye on it as if it drops in the under $100 range, it would be worth mentioning. If I had to chose between $90 Ti4200 or $100 Ti4600 as the most i could spend, I'd take a Ti4600 for sure. Of course the R9600 Pro could fall there soon too, and R9800 pro has already been available for under $200.
I guess it would take a frequently updated chart with prices for different areas/countries to further improve what you have done. As I am sure, the best bang for the buck varies greatly overseas. Good job though, and thx again.
ABIT IS7, P4 2.6C, 512MB Corsair TwinX PC3200LL, Radeon 9800 Pro, Santa Cruz, TruePower 430watt