Lowest price ever, AFAICT. I have a few hammocks by this brand (Yes4All) and similar inexpensive imported brands, and they're fine for light use. Can't beat the price!
Other colors are still normal price, around $14-17, just the blue dropped in price today.
The tree straps in the above listing with the hammocks seem overpriced - I'd suggest just using some pre-knotted rope, or there are better deals elsewhere for straps (for example, https://smile.amazon.com/dp/B06W5PCHM8