I noticed in this thread that someone said they easily sold a shape skiller with 7frw for um, and according to last ladder's price guide elemental skillers are more valuable than shape skillers. So how should I value the elemental skiller? Mal? Ist? Ist+? I don't know how prices fluctuate between "early" and "late" ladder.
Also: I have a perfect vipermagi and ladder 5 price guide puts it at Ist "late" in the ladder. How should it be valued currently?