Accessories can be traded, but there is no reliable public value list here
The official description says Duck Duck accessories can be unlocked, traded and collected. No maintained item catalog, exchange unit, demand history or reliable price list was found, so this guide focuses on identity and safety checks.
Trading can help collectors exchange cosmetics, but a numerical evaluator is only as good as its data. A single chat message or old video cannot support a stable price. Events, availability and new bundles can change demand quickly.
Before accepting, confirm that both sides show the exact item and quantity expected. Check whether each accessory is currently obtainable and whether the trade window changes after selection. If a player uses urgency, outside-payment promises or a trust trade, leave the deal.