Samsung released a trio of new high-end smartphones in January, but it’s the most expensive one that’s probably caught your attention. The Galaxy S24 Ultra is the best phone available right now, combining incredible premium hardware with sleek software and seven years of updates. Its main sticking point is the $1,299.99 starting price, but Samsung’s superb trade-in deal makes it far more affordable. The company is offering an instant credit of up to $750 when you trade in an eligible phone, meaning you can get the phone for as little as $549.99. Get the Samsung Galaxy S24 Ultra trade-in deal T…