I've looked at the diapers there too, and the shipping is $14, which is high, but the diapers are cheap.
But I also don't think the diapers are serious, as I get the impression that they have poly-fil in them to add bulk, but not absorbency. They don't say that specifically, but they seem to be marketed toward AB/DLs and usually when a diaper company simply says a diaper has "absorbent material" that's what it is.