Prices on chest peices seems to have gone up recently. I had sniped a zuni chest with 260 vit about a month ago for 10 mil or so. Found that new zuni chest that had more int, less vit, but % life to make up for that, and I've been wearing that. Decided to sell my chest and got 25 mil right away for it. Lowest price on 250 vit+ zuni was 30 mil, so I priced it accordingly to undercut the lowest price on market for similar item.
Also, cheapest buy out on IK chest were like 17 mil for very low vit ones that I def would not use for my barb. They were down to 8 mil at one point.
I'm guessing this is due to inflation as more and more gold is farmed and enters the market.