A worn steering wheel makes the whole car feel tired, but a fresh leather wrap changes your daily drive. It is one of the cheapest ways to make an older interior feel brand new.
Shops are often quiet in mid-winter or late summer, so try asking for a lower price when they aren't slammed with work. If you need to spread the $300 cost, we can look at a way to pay it off in small chunks.
That 18-month window is a deadline, not free money. If you have a balance left when the time is up, the bank will start charging interest on whatever is still owed.