Air walkers anygood???

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Hi there i reguarly go to fitness classes during the week, but would like something to do at home, ideally i would like a cross trainer but to save on cost as im getting married in 9 months so every bit goes towards that at min. My mom has an Air Walker which i was considering borrowing i was just wandering if any of you lovely people have experience of this machine if it works thanking you kindly