The computer is probley around now a days I wanna say 1500$ including the monitor/keyboard/mouse.
Desk ~ 80-100$ if u assemble it yourself (which is what I did) from Staples
Daylight Lamp ~ 30$ @ Lowe's
Flag ~ 20$ Online, but i bought mine at a merchant on base that was sellin them.
Lava lamp ~ 20$
Chair ~ 200$ from Staples. I Bought the one on display so I got it for 150$
Calendar ~ 30$ from staples as well.
Picture frame is like 5$ from walmart.
Pencil/pen holder ~ 10$, its got a built in swivel as well, pretty sick.
floor matt ~ 30$