It’ worth the price. In addition marvelous designer comes at a one time stage in character creation process so if you have 5 characters to cloth paying 150$ one time fee one month can get the job done for you. They used to have a perpetual license i don’t know if that is still available.
Also no other software can do what marvelous does, only other tool is garment maker and cloth in 3ds max that comes very close but is slower to work with. MD doesn’t take it to final you still have to topo and touch up the sculpt in Zbrush but it creates a good base for cloth. and in some cases for complex clothing shapes it does the job very well.