Wantitall are ridiculous with their pricing regardless of how one might try and justify it.
Comx used to specialize in laptops but now their range is pretty extensive. I find 9/10 their prices are better than anywhere else. Feel free to test my statement...
Try actualy ordering the items and then let the real test begin. Out of stock, slow delivery times, etc etc. Then what about return policies, guarantees and delivery fees?
Also how where these 4 sites chosen? It seems to be a random choice of a few big
names and a few small. There are other big names that should also be compared if you want a meaningfull comparision.
Also how about comparing higher ticket items like laptops.
What the comparison also shows is the HUGE difference in price between respective online retailers for some items. TGFG (thank god for google) it takes but a few minutes to do a quick comparison in order to avoid being ripped off.