This is totally false information.

This is derived from "Earned per sale" figure and if for example, a trial or a discount is offered (or a cheaper product to the front-end is offered as an upsell), it dramatically lowers the "Earned per sale" figure and therefore showcases a higher refund rate.

If you look at some other products such as Click n Bank for example it shows 1.97% which is impossible for any CB product while Bring The Fresh shows 78% which is again impossible (most likely due to the $1 trial they recently offered and reduced the price from $97 to $47) which again lowers the Earned Per Sale figure which shows higher refund rate (which is a useless metric).

This has been disproved many times before. The easiest way to know refund rate is to see the feedback and reputation of a marketer.