By Dave Snelling Most people assume Sky is just about TV and broadband but the firm offers plenty of other tech including phones, tablets and laptops. You can even buy MacBooks from the company and there’s a reason why that could be a very tempting proposition. Sky’s Mobile division is currently dishing out the MacBook Air for just £19 per month making this a seriously affordable way of owning Apple’s hugely popular laptop. •SEE THE SKY MACBOOK AIR LAPTOP DEAL HERE That price is based on you signing up for a 48-month contract with the total price – including a £2 upfront fee – costing £914. Th…