Seems a good deal to me. $29 per month for 24 months. 32g 6th gen iPad with 10gig of data per month then throttled to 1.5mbps. So that's $696 for the cellular iPad (currently $667 at officeworks) and 240g of data over the 2 years.
Plus I got $150 cashback through my work run cashback site, ymmv but that took my total down to $546.