This subscription box is for kids aged 6-11 (there's a girl version and a boy version). You can buy a subscription for 3, 6, or 12 months (cost ranges from $11.19 to $12.59) or you can buy individual boxes for $13.99 each plus shipping.
I looked up some of the items in the January box and they are worth more than the cost of the box, so the box is "worth it" in that way. When I peeked at the box contents before giving them to the girls, I wasn't sure how I felt about it- I questioned whether I would want to order a box of random toys and trinkets (after all, don't we have enough of those things?) But after watching the girls open the boxes and hearing their reactions, I can definitely see the appeal for kids (if not for their parents ;).
Here's a video of the girls opening January's box:
This is what was in the box:
Here's what was inside: