Is your feature request related to a problem? Please describe.
Recently I've been selling a lot of junk items (eg, green and grey items for appearances). The usual re-list for whatever price (with or without undercut) feature is great, because I like not having to type the price in, but sometimes I get sick of relisting items and just want to sell all the items for a fixed price or less.

Describe the solution you'd like
I think it would be great if in the Selling: All Items options tab, there was an option of "maximum list price" and quality of item. So for example, I could say sell all grey items at whatever price (normal functionality) unless that normal price is over 150 gold, then list them at just 150 gold no matter what the other people have them listed them as.

Describe alternatives you've considered
Currently I just overwrite each price with 150. Or it could be another Options tab, similar to Selling: Quantities, but it could be called Selling: Maximum price. And instead of Armor/weapons/etc, it could have Item Quality and maximum price, and I could say "grey 150 gold, green 200 gold" and if the auction house price is less than that, it could have a toggle for "either auction house or max" or "always max no matter the auction house price" or even maybe it could have a min price option also.