Hello and welcome to the forum. I also would have to ask the child's age, and how well something holds their interest.
First of all, I have never heard if that brand either so looked them up. They seem to be more into cheap security type detectors with a few overpriced low end hobby or gold detectors. I don't think the ones they hack would be appropriate for any beginner regardless of age.
Judging by the price range you were looking at I would likely recommend a Garrett Ace 250. Not expensive, well built, and easy to learn and use. Should be great for an older child or beginner adults alike. If you shop around you may even find one used in great condition much cheaper since people tend to upgrade before long once the detecting becomes more serious.