every time I see that at £30 I 'start' a 650b rim brake project in my head then realise that there is not future to rim brake 650b rims and retract .. otherwise it'd be a copy of ocean air rambler without the price tag of $2k.
Plus I think they are that old version you mentioned.
I do remember them selling off the old version, prone to cracking etc.
I don't know how well they fixed that with this version?