Thanks, but the documentation does not provide an option for adding "setup_fee". In fact it doesn't even include a3, pt, t3 variables. As for the NEW subscription button, the concept is useless for our projects for several reasons, the main one being that it requires creating product/plans offsite. As for the suggestion of our current method being "legacy" which suggests that it is outdated and insecure, I find that claim baseless. Why discontinue using something that is still the best solution for shopping cart integration?
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