I shop at Costco too, using my car, but...
If you buy $100 at Costco, and you figure you save, what, 10% over the grocery store ? That's a sheer guess. OK, let's go with it, let's say you save $10.
You'd BETTER have driven less than 20 miles RT to go there. At 20 miles you're at breakeven, because the car costs you, on average, 50 cents per mile (2007 IRS mileage allowance for businesses is 48.5 cents per mile).
So what are you REALLY saving, after you blend in the cost of motorized transportation?
Note - if you think you save more than 10%, and you live closer to COSTCO, then the math changes accordingly.
Originally Posted by na975
sorry, i can't live without me car. the bikes cool but lets face it,you cant go to costcos to buy a sh$t load of stuff without it!