Ruinousrevived

Site URL: http://www.ruinousrevived.com I contacted squarespace for help and unfortunately there's no setting options to change this so I'm curious if someone can help me find a code to do this. On one of my 'store' pages I have over 180 products and about 170 are on one page and then if you hit 'next' on the bottom there's just another 10 or so products. I want to limit it to 50 or so products before it gives the option to go to 'next' or 'previous' pages. Does anyone know how to do this?