It sounds like you've already bought the $70 package. I am pretty sure you will find that it is worth it. I use mine all the time and it has never failed me.

If you haven't bought it yet or can take it back, you might want to check around on the internet for lower prices. MS comes out with a new version each year. The version I'm using is from 2000 and I haven't noticed any problems with it yet. I'm sure that I will update it eventually as there are always new roads being built, etc., so at some point, it won't be as accurate as now.

But I'm sure the changes are minimal each year so, if you can find last year's version, I'm sure you can save a few bucks.