Relevancy Sales is the required number of sales in the past 60 days that determines if a customer search term is relevant to your product. Relevancy Sales is the trigger that tells Keyword Miner to start mining your new customer search terms.
Keyword Miner is disabled.
The chosen search term is useless.
Having one product sold in 60 days can mean this is a lucky sale.
This is the default value for Relevancy Sales because with two product sales, you can rule out that this search term can really generate sales. Choosing this search term is a good idea because it is working.
3 to 5
You are allowed to use values greater than 2 as you know best your business. Only you can decide whether it is feasible to calculate that sales is more than 2 in 60 days.
To understand how relevant a custom search term for a product is, you need to know how many sales the search term generated in a period of time.