I screwed up , have you?

I sent a dude a set of 10 inch backing plates thinking they were big drum 11.Totally my f.u. and i sent him a complete refund once we discovered my oversight. Today the wrong part I shipped came back to me. Postage paid by sender.The guy I sent a wrong part to.You gotta love mopar guys. So i gotta set of 10 inch backing plates for an 8.75 for 30., so I can pay him back for postage. Dont fabo rock?