I'd absolutely love to switch to Paddle, the product seems great. Unfortunately, my business is a marketplace which I don't believe Paddle supports. Happy to be wrong on that though!
Are there any plans to have a marketplace offering?
Unfortunately not sadly - we'd love to but the tax categories prevent us from working with any site where the products aren't yours. This is because it takes on all the tax liability.
Stripe are awesome for that (can appreciate the costs stack up internationally though). At your avg transaction size I'm not sure I'd know anything cheaper that's worth the extra work.