Hi, pls let me know the pricing and availability of the below:

1. Adata Vitesta Extreme PC6400 DDR-II 4-4-4-12 1GBx2 Kit
2. Adata PC-6400 DDR-II (non extreme normal version) 1GBx2 Kit
2. Corsair XMS2 PC6400 C5 DHX DDR-II 5-5-5-15 1GBx2 Kit
3. Corsair XMS2 PC6400 C4 DHX DDR-II 4-4-4-12 1GBx2 Kit

Thanks.