eBay offers listing upgrades like Bold ($4.00), Subtitle ($1.50), Gallery Plus ($1.50) and International Visibility ($0.50).
Upgrades increase visibility but add to your costs. Calculate if the extra sales justify the expense.
At $4.00 per listing, Bold is only worth it for high-value items. For a $50 item, you'd need 1 extra sale just to cover the cost.