Wall unit id  

Early Ikea
Okay, this may just be my ignorance but it looks a helluva lot like the very first "Ivar" modular shelving circa late 70's before it became the monster industry it now is. Ikea is famous for knocking off a lot of modern designs so there is a fraction of merit in some of the older pieces before the name Ikea became synonymous with crappola.
Notwithstanding, that crappola saw me thru university, first apt. Etc.

Yep
Pretty sure it's Ikea. If it has metal dowels going thru the post to hold the shelves? Yep.

Ikea
Sounds right seller wants to much anyway thanks