Playskool Pipeworks

I run a club to build a primary school and this toy is still popular.
http://wapedia.mobi/en/Playskool_Pipeworks (links to product information.)
The problem is some parts are broken and must be replaced.
Aynone know of anywhere that sells this? Or better yet, does anyone have a set they are willing to sell me?

I know the game and I know how popular it is. Looking for a game on ebay and maybe your school would come with money to buy it.