That ought to have been with their previous pricing when RTW and MTO were the same, or just a RTW boot. For a MTO-boot now the price would be higher.
That's exactly what they do: http://pdfcast.org/pdf/vass-pricelist-2013
I meant for the cordovan section, It seems to be only shoes, and boots/high boots combined into one. There's no price difference listed like the calf section.
They have it listed as special pricing, since both medium and high boots in cordovan need to be quoted each time. The cost then depends on how many pieces they need for the boots, if it's a medium high boot and they can use for example three pieces of cordovan for the hold pair, it will be differently priced compared to a high boot which they need four pieces for. But if they only have smaller cordovan hides, they might need four pieces for the same medium hight boots, and it will cost more.
Looks like there's a recent price increase.