A smart approach would be to work your way to the top by generating affordable leads in a short amount of time with a small amount of budget by bidding on lower position, higher quality keywords. Then start to scale.
Here are the top 10 things to make sure your website complies with in order to prepare for running ads.
Yes. But we currently don't recommend adding product ratings to ads.
Why You Use Search with e-commerce Businesses Companies...
Start new campaigns with a manual bidding strategy until the algorithm has enough data to switch to automatic. Then, see how high you can push the algorithm to automatically raise its goal (i.e. target CPC of $X could be the goal). You must have conversion tracking set up correctly before running any campaigns or else you will be feeding the wrong data into the machine learning algorithms, which will obstruct its ability to get results. You can check this by going to the Conversions report and checking the “Include in Conversions?” column and making sure that only the appropriate conversion actions are included.
What to expect with Competitor Campaigns - You might decide to target the clients’ competitors.