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something thrown in (with a purchase); something extra; free gift; freebie; giveaway; premium; prize
(giving a) discount; price reduction
addition; embellishment (e.g. to a story)
買い物をしたら御負けがついてきた。
When I shopped, I got a freebie.
車が故障した御負けに突然の雨まで降ってきた。
To make matters worse, it started raining too.
常連客だと覚えてくれて店員が御負けをつけてくれた。
The clerk gave me something extra.