The big web auction is their BIG auction, they 
auction off rare and higher quality cels than 
the normal auction, in the big web auction they 
auction things like Hanken cels, Rare scenes 
from movies, TV series, and OVAs, they will 
probably auction Gainax and Ghibli cels as well, 
just generally a lot more high quality shots 
than their normal auction. Their normal auction 
is just made of up cels/scetches their stores 
have and they sell online.