Selling ball mixer and leftover plumbing pipes

I have three new ball mixers and I have the invoice from Saudi Ceramics (I will hand it over to the buyer for warranty purposes). Since more than a month has passed, they were not exchanged at Saudi Ceramics. The reason for selling is that they do not suit the sink design as shown in the pictures, and I want to sell each mixer for 217 SAR. Also, I have excess pipes left from plumbing work as shown in the picture. I would like to sell all the pipes for 200 SAR, non-negotiable.