I bought a mapcard last summer and agree that it is one awesome tool in my arsenal. The area I hunt is big and deep. I have found some minor inconsitencies vs what I found when I checked the areas first hand, although I don' t know how old the aerials are, and wish I did...regardless, it still shows funnels etc. I paid $13 last year at a Fleet&Farm store in Wi. It' s good for one year and I will probably will get a new one this year.