200SX timing belt gone. Replacement cost?

I have a 1997 Nissan 200SX-SE with 114,000 miles on a 1.6 engine. On the highway, it just died softly and quickly. Diagnosis is that the timing belt went. The car turns over, but compression is nil. Some suggest just replacing the engine with a used one. Other say it could be fixed. Which would be less expensive? I've never had problems with this car, and everything else is perfect. Any ideas?