Ah those! - I had a set of those fitted (well they look the same but came with "oriental" lettering). They are really very much in the cheap and cheerful department.
That said I kept the top case on until late Sept this year it became rather rattly.
The sidecases looked neat, but were ergonomically useless.
Free to a good home, or a bad one, as long as you pay the postage. But if I were you I'd decline.