Why we usually start here
A replatform costs a six-figure sum and takes months. A fix to internal search costs days. Both can lift revenue; only one of them can be reversed cheaply if it turns out we were wrong.
So on a first engagement we would rather look at conversion than quote a rebuild. If the gains are there, you have them in weeks. If they are not, we have learned something specific about why — which makes any subsequent build or migration better targeted than it would have been.
Research before opinion
Everyone has a view on what would convert better. Views are cheap and mostly wrong, including ours.
What is not cheap is evidence: where people actually abandon, what they actually search for and fail to find, which questions support answers over and over because the product page does not. Four weeks of that produces a list nobody argues with, which is worth more than a redesign nobody can evaluate.
The honest limit of testing
The industry talks about A/B testing as though every store can run one. In practice a product-page test needs thousands of sessions per variant before the result means anything. Most mid-market stores reach that in months, not days.
That does not make testing useless — it makes it a tool for a narrow class of questions. For everything else, the responsible approach is to fix what is demonstrably broken, measure before and after, and be clear about what you can and cannot attribute.