You can set your own prices for the products and market them.
But why do you want to give them 40% of all your sales?
If you’re serious about starting an Adult toy store business – then build a powerful and scalable platform like Jimmy or Femplay.
If you go with these FREE white label sites – you cannot pivot your business if you see a light at the end of the tunnel.
You need to go with magenta or presta shop or open cart or some custom e Commerce solution and then customize it heavily on theme design and integrating drop shipping API or high risk merchant account for receiving payments.