In order to get their sound you'll have to spend the $$$$$ on modules... to BEGIN with.
There aren't any shortcuts. Honestly, I'd change your focus. You're going to have to be comfortable in a modular environment first before you can make it applicable towards any kind of meaningful production.
The power of Eurorack is to go beyond a stand-alone, hardwired synth. As Lugia said, the gold is in all of the modules that aren't in the audio path but CV control.
In my experience, having a DAW involved in sound creation is very limiting because it's difficult/time consuming to modulate your DAW sequence from the Eurorack.