Repairing or replacing a concrete driveway
If the cracks are thin and the slab is still level, a repair can carry you a while longer, and I'll tell you so. When sections have sunk, water pools toward the house or the old slab was laid on loose dirt, a patch only covers the problem, because the cause is underneath. In that case a new driveway on a proper base is the better use of your money, and I'll explain why at the estimate.
What shapes the cost of a concrete driveway
Size and tear-out set most of the cost, as I mentioned above, but your choices add to it too. A stamped border or a wider entrance at the street each raise the price. When the budget is tight, I'd rather you keep the plain broom finish and spend on the base, because nobody sees the base on day one, yet a fancy top on a poor base cracks just the same and usually can't be fixed without tearing it out.