I'm beginning to notice as I climb the hardcore ranks (currently level 50) that it's getting harder to replace items with high +stats from the auction house. For example, my 102 DPS spear that has something like 140 str/80 vit is great, but it needs to be replaced. when I look for lvl 50 items on the AH, I can find 190-210 DPS weapons, but with +stats that are no where near my current weapon. Same goes for my shield -- I can find shields that add a ton of armor, but are no where near the +str/+vit I have on my lower level shield.
Is this just the way gear progresses at the higher levels or have I had bad timing with the AH?
EDIT: I have been able to find 1 or 2, but they tend to be prohibitively expensive. Seems like they're much more rare at a higher level.