Flutterbye Fairies

[Trampoline]

My 5yr old daughter keeps seeing the advert for Flutterbye Fairies (fairies which 'fly' up in the air having been charged on some kind of base). She is really keen to have one for xmas but they are around £30 - but I've seen what looks like a Disney equivalent (flying Tink) which looks the same kind of thing but is much cheaper. Does anyone have any experience of either/both of these? Many thanks in advance!