Yes, that is the manufacturers' listed weight, given on the Rab website. That looks like a decent price. There is a closable vent tube on the hidden side of the photograph which has a midge netting panel and allows one to take a peak at what's happening outside.
That was taken from this link https://www.trekitt.co.uk/equipment/survival-emergency/rab-superlite-group-shelter-2-person__35473?currency=GBP&chosenAttribute=MR-51-OR-2&gclid=Cj0KCQjwpreJBhDvARIsAF1_BU2VoxgpFQpXbSpLPpU9-3XToPTEx3zA2gwLpPK2Qj6L2M47BvrpCtcaAsb5EALw_wcB