Nicaraguan prices quoted online are not accurate.
Pros: Ease at airport, ease of return, quality car.
Cons: Long check in time initially, prices are double to quintuple what quoted on site. They force you to buy insurance in country, which is somewhat understandable, but unlike in the states it can make the price quoted by Kayak go up by 500%. We got a rental on Kayak for $90. When we got there it was $541 for full coverage. Luckily we were able to do something for $227, but that is still more than double the quoted price. Need a system to incorporate insurance add ons in advance or ppl will continue to feel duped as we did.