Can buy one, you probably will not need but.

As a longtime ThinkPad users, I can confirm that the quality has now abated somewhat. Yes, ThinkPad is no longer ThinkPad.
But for a long time because the Chinese Lenovo build for some time the equipment, time still for IBM.
The docking station complete for me just to work and I do not need actually.
For 25 euros I got now just a foot for my ThinkPad X61s, which makes it twice as thick and twice as heavy, better speakers and a DVD drive.
It does not have a power supply and thus brings no great advantage if you do not use the dock as such. She has enough USB ports to printers and other peripherals connected to the ThinkPad, modem and network connection.
The processing is valuable and hard.
Interestingly, the expansion option is offered by the ThinkBay!
Instead of the DVD drive, you can install a second hard drive or SSD, or a long-term battery!