First of all, I'm a HUGE DIAMOND FAN and love anything with bling! So baggaholic - I LOVE the idea of adding bling. But, I'm not a big fan of "after-market" diamonds... I bought my Cartier already with diamonds, and I think diamonds are more "special" when they come from the original company. JUST MY OPINION!
Same reason a sterling silver bracelet that would cost about $200 at Tiffany costs more like $2000 at H. Because they CAN.