Thanks for the feedback. It is 0.75% from both sides. We tried to write the landing page from the developer’s perspective, but we will change this to make the pricing more clear.
Actually, the fees aren't that low: a) stripe charges 0.8% per ACH transaction, so that's almost a 2x profit margin at 1.5% fee; b) stripe also puts a cap of $5 per transaction, so the 2x profit margin is even higher once the transaction is over $625. Always be wary of % fees w/o a cap.