First, this is cheaply made from pressboard and as such it's not advised to move it because the whole thing is held together cams and wood screws in sawdust.
Second, it is not for an average person to assemble. It took two of us 8 hours and the final product still didn't fit together all that well. I'm an engineer and my helper has put togethers hundreds of these sorts of furniture items.
Third is the instructions. Don't follow the written directions because up is down, front is back, and left is right. You're better off going from the pictures but those aren't all that good either.
We're keeping it only because they instruct you to attach it to the wall half way through the assembly. So now taking it off the wall would not only be a lot more work, leave a mess, and wouldn't be returnable.