When making a new site in Treepl you can choose to start with a template.
Q: Are these templates free?
Yes. Templates are free.
I believe though that the design and dev assets (PSD’s, SASS, etc.) are at cost if you want them - unless you are a ‘Partner’ level users, in which you get them free.
But someone might need to confirm if this is still the case.
Correct, templates are free, PSD’s, Assets etc. are free for partners: https://treepl.co/cms-partner-program