I've just noticed the above at the top of my ebay summary page, in the coupons section

10% off Luxury watches. Min spend £2.000. Max disc £500. 1 redemption per customer.

So if you're on the lookout for a luxury watch - check your ebay coupons before hitting the buy it now. Apparently its sent to targeted users....... god knows how they think I'm in the market for luxury watches