Madesmart 17-1/4 by 11 by 18-1/4 to 32-Inch Expandable Undersink Shelf Organizer

Make use of that awkward space under your sink, in spite of plumbing pipes, with this shelf unit. Its shelves each have five sliding and removable sections that allow you to customize the arrangement. Additionally this unit is adjustable to fit most cabinets.
Price: $24.99

Click here to buy from Amazon