That looks almost identical to the two that I bought from Costco, I think for ~$5 more each. Mine have held up very well.
I will say that the one I store ammo on is slightly sagging on a couple of middle shelves after a couple of years, but that's on me for overloading it with full ammo cans. I should probably swap that one with metal at some point. The other one holds auto maintenance supplies and some camping supply bins and the shelves are as straight as on the day I bought it.