Add-on $6.87 Nalgene 48oz Wide Mouth Water Bottle

The grey 48 oz Nalgene bottle is going for $6.87 as an Amazon add-on item. I bought 2 of these 4 years ago, and they’re still going strong. I put these in the dishwasher all the time.
https://www.amazon.com/gp/product…0DER&psc=1