Trade items on the official PoE2 trade site (pathofexile.com/trade/search/poe2), which provides search filters and a contact button that formats whispers for you.
Stackable currency can be traded through the in-game Currency Exchange. A premium stash tab is required to list items for sale.
Prices are player-driven and reset each league, so price-check against current listings rather than fixed ratios.
Compare similar items by matching their key modifiers, item level and base type.
Use pseudo-stat searches (such as total resistance) to find equivalent gear quickly.
Account for near-perfect rolls and demand when pricing high-end items, and use live search for rare or high-value targets.