Influencer Marketing Basics

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# Influencer ROI Calculation
Cost per post: $500
Reach: 50,000
Engagement: 3,000
Conversions: 150
Revenue: $7,500

ROI = (Revenue - Cost) / Cost × 100
CPE = Cost / Engagement

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def influencer_roi(fee, reach, engagement_rate, conversion_rate, avg_order):
    engagements = reach * (engagement_rate / 100)
    conversions = engagements * (conversion_rate / 100)
    revenue = conversions * avg_order
    roi = ((revenue - fee) / fee * 100) if fee else 0
    cpe = (fee / engagements) if engagements else 0

    return {
        "engagements": f"{engagements:,.0f}",
        "conversions": f"{conversions:.0f}",
        "revenue": f"${revenue:,.0f}",
        "ROI": f"{roi:.0f}%",
        "cost_per_engagement": f"${cpe:.2f}"
    }

r = influencer_roi(fee=2000, reach=100000, engagement_rate=3.5, conversion_rate=2, avg_order=45)
for k, v in r.items():
    print(f"  {k:22}: {v}")