Chargebee

I like that we can also do quotes from the system that customers can accept and it takes them to the checkout. Huge time-save for our sales team.

It's hard to do price indexation to subscriptions. It generates credits and credit notes that our customers initially don't understand without us explaining it.

Easy to set up and has a good API. Support is good and fast response so long as the issues are simple and don't involve anything technical.

The backend system is grossly unoptimized to the point many of my customers cannot be billed anymore. I was not informed of these issues when signing up and was promised that the system would be able to handle my very specific usecase. It clearly can't despite me giving them actual numbers. I've already lost over $6000 in charges I can't add to my customers' invoices and a few thousand dollars in invoices that can't be generated. For the past two months I've been unable to add charges for any of my customers and keep getting the runaround by different support agents as to what the cause is. First I was told I was violating a 150 API calls per minute limit despite the fact that not a single call had gone through successfully in the entire time period they were citing but also I'm skeptical of because each API call I make to their service takes between 2 and 10 seconds to complete. Now I'm told I need to batch things weekly because adding charges to my customers is too taxing on their CPUs. Billing line items should scale linearly but it is clear from how quickly their API bogs down that it scales exponentially for them at best and likely even worse. I never had this problem with my previous provider and they aren't even a billing or invoicing company.