Item power calculations: consiter crits?

[Domiano]

Hi there,
I'm a big player of multiplayer Angband. Currently, mAngband uses an old pricing algorithm to determine how to value items. Since their is a significant market between players, this does not really cut it anymore. While asking around, I heard about Ang's current pricing system, which is rather impressive and through.
However, I didn't notice any place in the calculation of an item's power which consitered the increased damage output on a weapon through critical hits. What is the reasoning behind excluding them? You could use assumed combat and tohit values akin to what is used with off weapon damage with extra attacks. Without crits considered when calculating power, heavy large-dice weapons will be undervalued.
Or... did I simply miss the crit added value?