are you automating test of a product?
are you sure that the automation is really important or not?
be sure that manual test cost > automated test cost.
easy… just calculate first
manual test cost = manual preparation cost + (N x manual execution cost)
automated test cost = automated test preparation + (N x automated execution cost)
… where N is the number of time test run.
We should use test automation only when it advances the mission of testing.