Ebay is a great marketplace for sellers.
How can I increase my Ebay sales with discounts?
Multi-Buys: ebay allow you to create multi-buy offers for most categories. Set offers for buying multiple quantities of the same product.
Codeless Coupons: codeless coupons are great ways to create vouchers for buyers. Once a voucher has been created a link can be shared on social media to offer discounts.
Send Offer to Buyer: many categories allow you to send an offer to a potential buyer once they message you with an enquiry. Turn enquries into sales.