Case studies
Quick answer: Six detailed paid advertising case studies by Mizanur Rahman, a digital marketer in Dhaka. They show how audits, tracking fixes, better audiences and intent-matched ad copy produced a 4.95x ROAS, a CPA cut from $32.24 to $9.36, and 14x more messaging conversations. Each one lists the problem, the changes, the numbers and the lessons.
E-commerce case study: 4.95x ROAS on Meta Ads after two media buyers failed
From two failed media buyers to 510 purchases at $2.40 each: how an audit-first Meta Ads plan reached a 4.95x ROAS.
Read the case study →How one Meta ad returned $79,750 from $266: a long-term client case study
$266.19 spend, $79,750.54 in purchases, ROAS 299.60 from one ad. A rare result built on a year of testing.
Read the case study →From 117% to 747% ROAS: how I cut ad spend by about 59% and kept conversions steady
Less spend, fewer clicks, almost the same conversions: ROAS rose from 117.29% to 747.48% after cleaning up targeting and bidding.
Read the case study →How I cut CPA from $32.24 to $9.36 and lifted ROAS to 1,245% in one month
CTR 7.29% to 12.86%, conversion rate 1.65% to 4.01%, CPA $32.24 to $9.36 and ROAS 165% to 1,245% in one month.
Read the case study →Facebook messaging campaign case study: from 17 to 234 conversations with no extra budget
A dead Facebook campaign went from 17 messages to 234 conversations in about half the time, with no extra budget.
Read the case study →Ad account audit case study: from blind spending to a $10.50 CPA in two days
$2,000+ had been spent blind. Tracking, funnel and structure fixed first, then 3 sales at a $10.50 CPA within two days.
Read the case study →Frequently asked questions
What is in a Mizanur Rahman case study?
Each case study explains the starting problem, what was changed, the measured results and the lessons, with figures taken from the ad platforms. Client names are kept confidential.
Which platforms do these case studies cover?
Meta (Facebook and Instagram) Ads and paid search (Google Ads style keyword campaigns), plus tracking and funnel audits.
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