What is added to Meta’s message rate?
Meta bills the provider per message and publishes those rates openly. Whatever the provider adds is their margin. Some state it, some fold it into a per-message price you cannot decompose, and some bundle it into “credits” with no published conversion.
Ohanvi
Meta’s published rate plus a percentage set by your plan — 20% on Pay as you go, then 15, 12, 8 and 5% as the plan gets bigger — and nothing else. Meta’s card is public, so any invoice reconciles against it line by line.