Stumbled across this landing page. 12 participating eBay stores. Max discount $1000, 3 transactions per person.
Terms and Conditions. Click through a cashback / commission-refund website for potential extra savings.
According to the comments this works with Delivery as well as Click and Collect
Full list of stores:
|BCF (boating, camping, fishing)||Rays Outdoors|
* - Participated in the previous 20% selected stores promotion.
Notable Deals: (In Progress)
Don't forget to have a look at the eBay % off Sales List for a complete list of every eBay % sale!