Don't be expecting any price cuts on the HD 7970 anytime soon

Additionally, the current pricing scheme places each series $100 apart. A $50 drop in the 7970 pricing would require a similar drop across the board. As of yet, Nvidia doesn't have any competing chips at the lower mainstream price level where the majority of sales are. So AMD can either sacrifice the HD 7970 or they can sacrifice the rest of the line up to save the HD 7970.

http://www.tweaktown.com/news/23275/don_t_be_expecting_any_price_cuts_on_the_hd_7970_anytime_soon/index.html
AMD的市場定位策略是, Nvidia出得一張, 所以唔減價