The official MB tool works like butter. My Indy loaned me his. I`ve been looking for a used one, but they cost more than a rusted out W123.

400 × 250 - sirtools.com
Here is one for $100 but you will need to spend $200 for a hyd Press.
Or if you know someone with a press would be cool and cheaper.
760 × 692 - benzworld.org
Or you can use ROLLGUY`s method of making an adaptor and the HF big "C" Press.
Ball joint replacement using HF kit and home made adapter
You will have to beat the Lower Ball joint out with a BFH and a Socket on the end of the BJ.
I used FUNOLA`s Red Neck method, worked great and I didn`t have to hold the Steering Knuckle with one hand and beat with the other.
Red neck lower ball joint removal
Or stick it is a vice.
1280 × 960 - benzworld.org
Charlie