Ikea Billy bookshelves black with doors and extensions

This is a set of 4 black book shelves. Dimensions of each unit is 80cm width, 28cm depth, and 237cm height. The shelves are in used condition with visible signs of wear and tear, including some peeling of color on the bottom, screw holes on the sides and holes on the inside for electrical outlet access. See pictures. Functionality is not affected.