When you order online, which reviews do you read first?

The lowest or the highest?

I was gonna buy one of those neck massages with the rotating thingys in it while at a store. I hopped on Amazon and saw one with more rotating thingys, cheaper, with good reviews. Don't know why i didnt read the bad ones first. Plus it's non refundable so to me that's a red flag.

Back to the store I go.