The savings was huge. Was at $12 to $15 a day in smokes. Then went to about a $1 a day after I figured out I like pass-thru's way better then batteries. Pretty much paid for my work car (97 Malibu) and a 93 Miata I bought a few weeks ago as a weekend toy. Trick is, take your cigarette money and put it in a jar or coffee can. You will be surprised at how fast the money builds up. Plus I feel alot better health wise. To you new people... Good luck.