If by money factor you mean what the total lease "rent" is by the end, it is $5774.86. I pay $627.02 (that two cents really bugs me). I've already made three payments. June will be the fourth.
Ok, I think I am starting to get a better grasp of your situation.
1. You state that the cumulative total lease "rent" during the 36 month term of your lease is $5,774.86. This translates to a monthly "rent" charge of $160.41.
2. Subtracting the "rent" charge of $160.41 per month from your lease payment of $627.02 per month means that each lease payment reduces your outstanding balance by $466.61 per month. (This is assuming sales tax is not included in your monthly lease payment.)
3. $466.61 per month times 36 monthly lease payments is $16,797.96. That's the cumulative amount that your outstanding balance would decrease by if you keep the lease for the full 36 months.
4. $16,797.96 added to the lease-end Residual Value of $24,156.60 is $40,954.56. This matches the buyout amount that you were given by the rep you spoke with at KMF. It also makes me wonder if the purchase price stated in your lease agreement was the same amount.
Two other things about the buyout amount you were quoted still don't seem quite right.
First, since you have already made three payments, if the purchase price was $40,954.56, your current outstanding balance should be less by $1,399.83 (i.e., 3 times $466.61), or $39,554.73.
Second, your buyout amount should include a $300 purchase option fee, which would bring the total buyout amount to about $39,854.73.
So in summary, based on the assumptions shown above, the buyout amount you were quoted appears to be overstated by about $1,000. Perhaps this could have been the result of the service rep that you spoke to on the phone making a rough guesstimate. As I suggested in a previous post, to nail this down more definitively it would be worthwhile for you to request a formal estimate of your lease buyout amount. In your request for a lease buyout estimate, be sure to ask KMF to itemize each part of the total buyout amount.
Finally, you might be wondering how much money you would actually be able to save by buying out your lease now. The answer is that you would avoid 33 monthly "rent" payments of $160.41, for a total "rent" (i.e., interest cost) savings of $5,293.53. Note that this is a gross amount of avoided interest cost - if at the time you buy out your lease you roll some or all of the outstanding balance into a loan (presumably at a lower interest rate), then the interest charges over the life of your new loan would partially offset some of the $5,293.53 savings.
Of course you have already saved a significant chunk of money by receiving the lease incentive when you originally leased your Stinger rather than buying it. The lease buyout strategy helps keep KMF from clawing back too much of the value of the lease incentive by collecting the high interest charges embedded in the "rent" component of your monthly lease payments.
Clear as mud?