Frontier Montana PCI card

Frontier Designs made a 2-in, 2-out ADAT interface called the Dakota, and a daughter card called the Montana. They're only available second hand right now. I'm looking for a Montana card.

The card has sold several times within the past year, usually as part of a pair. The price would be equivalent to somewhere between $75 and $150. But contact me about pricing if you have other ideas; we could negotiate.