They don't seem to understand that they'll be paying for this for years anyway. I've a client I do some work on for BigCommerce. He already had a bunch of java

They don't seem to understand that they'll be paying for this for years anyway. I've a client I do some work on for BigCommerce. He already had a bunch of javascript on the checkout page to add warnings and notes and stuff rather than try and have a fully customized dashboard. I've added a couple more. Most of them broke a couple of months ago after BC made some changes to the checkout. Cue me having to do some emergency fix work. And that is why it's often better to pay for a monthly app, it's not just the functionality, it's the keeping it up-to-date.