Medium Brown Billy Bookcase (Like New) in Darnestown, Maryland For Sale

We are selling an IKEA Billy Bookcase (medium brown) with glass doors. The entire set retails for $699, but willing to part for $350 or best offer. We purchased the set less than a year ago, and it is excellent condition. We'd be willing to each of the three components that make up the set. Measurements are below:
Entire bookcase: 79 (L) x 11 (W) x 93.5 (H)
2 bookcases: 31.5 (L) x 11 (W) x 79.5 (H) (inches) each with height extensions of 32 (L) x 11 (W) x 14 (H) (inches) each
1 bookcase: 15.75 (L) x 11 (W) x 79.5 (H) (inches) with height extension of 16 (L) x 11 (W) x 14 (H)(inches)