I had a SPOT trace on my 4runner. It was initially $75/yr, then it went up to $150, then the final straw was when it went up to almost $300/yr. I know, I know, "thats a small price to pay for the service if you ever needed it, etc etc...", but my issue was why in the hell was I supposed to pay more than what a "new" customer would pay? It reminded me of directv and similar services, where loyal/longterm customers would pay more than new customers. If you look at the spot/trace website, it seems like a reasonable cost. What they dont tell you is that it'll continue to go up and up and up. Sadly, its a common business practice anymore.
I run a couple of android smart tags now.