The bar of "average" keeps getting wider. What used to be a 1-5 million gold rare is now worth 50k-100k if that. But the high end stuff that used to go for 10 million or more are now 50-100 million.

RMAH is a finicky beast. I've sold mid level junk for $5+ that I tossed up as a joke, yet nice pieces of int/vit/resist all/+crit remain unsold.

Hard Core Auction House is it's own beast as well.