I was able to find a used tool for $130. A little more than I wanted to pay but it looks like it is a quality built tool that should last a while. Thanks for all the info guys!
Heres the one I ended up buying, the seller claims he has used it on a few OM617 engines.
https://www.ebay.com/itm/Mercedes-Timing-Chain-Rivet-Press-Tool-Set-SINGLE-AND-DUAL-ROW-73136FG-SG-01-002/173938759581?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649