How did the valuie engineer

 

I bought a Nuvi 350 a while back and it I think it was around $300. For Christmas I have out Nuvi 50 LM's and they were $99 and seem to have more features.

The 350 seemed much faster and I have loved it. But I am wondering what they did to make these 50's so inexpensive as even today there are GPS units that cost much more.