"Facebook ads don't work for my business."
I said that for two years. Tried it once, spent $200, got zero sales. Never again.
Then I watched a competitor blow up. Same product, same price, but they were everywhere. Instagram, Facebook, even TikTok.
I knew they were using ads. So either they were burning cash or... I was missing something.
Learning to Calculate ROI
I took a course. Learned about tracking pixels, conversion rates, customer lifetime value.
Here's what I figured out: I wasn't calculating ROI properly.
I was looking at immediate sales only. But my product? It's a subscription skincare box. Customers stay for an average of 8 months.
So the real math:
Customer acquisition cost (CAC): What I spend to get one customer
Customer lifetime value (LTV): What that customer is worth over time
If LTV > CAC, I win.
My First Real Campaign
I started small. $500 budget. One ad set. Targeted women 25-40 interested in clean beauty.
The results after 30 days:
Ad spend: $500
Link clicks: 1,240
Website purchases: 23
Revenue: $1,150 (first month subscriptions)
Looks like I lost money, right? $500 spent, only $1,150 made?
But here's what happened next:
Month 2: 19 of those 23 customers stayed. Revenue: $950.
Month 3: 17 stayed. Revenue: $850.
Month 4: 15 stayed. Revenue: $750.
By month 6, those original 23 customers had generated $5,200 in revenue.
And I spent $500 to get them.
That's a 940% ROI.
Scaling Up
Once I knew the math worked, I scaled.
Month 2: $1,000 ad spend → 47 customers → $11,200 LTV
Month 3: $2,500 ad spend → 112 customers → $26,800 LTV
Now I spend $5,000 a month on ads. It brings in about $12,000 in first-month revenue and $45,000+ in lifetime value.
The key? I track everything. Every click, every conversion, every month's retention.
Don't guess. Calculate. The numbers will tell you what's working.