The listing indicates that there are 400 H Molds for what I think is a decent price on eBay below. However, the issue with the set I think is there seems to be a lot of assorted different colors and not just a few for a more consistent set.
https://www.ebay.com/itm/H-Mold-Cla...416450?hash=item3d92a6e602:g:GogAAOSwjapdb9bc
https://www.ebay.com/itm/H-Mold-Cla...416450?hash=item3d92a6e602:g:GogAAOSwjapdb9bc