After a quick search I came up with something similar :
Price : $35.19
http://www.4myrooms.com/048779.html
Note : I've never ordered from this company or seen this light in person, it's just one I came across when searching for something like the one you posted.
I might try ordering a pair for myself, problem is every time I try reading in bed I either fall asleep right away or can't put the book down and end up reading until 4:00 in the morning
Rob