The catalog taxonomy files Item Enhancement under Consumable. Everything listed below shares that subclass, which makes this a focused market view rather than the whole Consumable shelf.
Item Enhancement listings clear and replenish at whatever pace the in-game market sets; some subtypes trade in volume, others sit static for stretches. The price-history chart on each row's detail page makes that pattern visible at a glance.
If you want the full Consumable category rather than only Item Enhancement, the breadcrumb above steps back up one level; otherwise the table below covers every tracked item in this subclass.