SaaS vs. custom build. A mid-range WATI or Respond.io plan at $299/mo = $3,588/yr, plus per-message markup that typically adds $0.01–$0.03 on top of Meta's native rate. At 50K outbound conversations/mo, that markup alone is $6K–$18K/yr. A one-time $25K custom build on the native Cloud API (Meta-direct rates) pays back in 12–18 months at that volume and removes the platform ceiling on custom commerce flows. Human support vs. AI bot. A $20K AI bot that deflects 40% of support tickets saves roughly 1.2 FTE of support load at 30K tickets/mo. At US support rep cost of ~$55K/yr loaded, that's $66K saved in year 1 — payback inside 4 months. Offshore support at $15K/yr/rep makes the math tighter: payback around 11–14 months, but the bot still wins on 24/7 coverage and language fan-out. Template approval time cost. Every un-approved marketing template delays a campaign by 2–24 hours (Meta's review SLA). Teams that pre-submit 20 template variants at project kickoff save ~3 weeks of launch-month delays vs. teams that submit templates reactively.