I bought my soft top from the same eBay source, 1boygenus (Phil) and installed it myself. It is a job that can be done by a reasonably capable person so long as you think through each step of the of the project before proceeding. The advantage of doing it yourself is that you can do all of the little detailed stuff that is usually ignored. Like oiling the bow pins and replacing them if they are warn. The top that Phil sells are high quality and fitting it onto the frame is straight forward. Installing the top, however, takes attention to every detail and a couple of good days of careful work.
If would do minie again if it ever needs a new top.
Also, take time to find the correct contact cement for a canvas convertable top (was not easy for me to find).
190SL, 230SL 5-speed