Wether it's worth it is subjective. If you like the soap and the way it smells and performs, then great. If you don't like the brush, you can always pick up an inexpensive Omega boar on the internet. I did find this link for ManCave on etsy :
View SHAVE SOAP REFILLS by ManCave1 on Etsy

Also if you do a Google search for man cave shave soap, you will find a little more information.