Erick Schonfeld of TC, wrote an interesting post about Amazon. If Amazon is a shopping site, what are the rest? huh? Those stats are amazing.
Peak items ordered on a single day
2008: 6.3M
2007: 5.4M
2006: 4.0M
2005: 3.6M
2004: 3.6M
Items ordered per second
2008: 72.9
2007: 62.5
2006: 46.3
2005: 41
2004: 32
Peak items shipped on a single day
2008: 5.6M
2007: 3.9M
2006: 3.4M
2005: 2.7M
2004: 2M+
If you still create duplicate and clone shopping sites via xml feeds of dealers, give up internet.