I am developer that is going to be building a SaaS that will handle payment processing for a variety of clients, in addition to providing other services bundled in. Can anyone recommend to me an API or service that I can use to handle the payment processing side of things? I was looking at Stripe, but it seems expensive for my needs (2.9% for each transaction would really stack up, unless I'm not looking at the right thing...)<p>Here's some of my needs:<p>- My per-seat plans will be 10/100/101+<p>- Each seat will be doing monthly payments to my client<p>- Each payment will be anywhere from $1000 to $4000+<p>Any thoughts? Thanks for the input