I am looking to buy either B2601 @ 0% for 72 months, or the LX2610 @ 0% for 84 months. When I do the math, the KTAC insurance comes out to be $1.40 per thousand on the LX2610, and $1.33 per thousand on the B2601. What gives with the different rates? I thought KTAC had a set rate of $1.30 per thousand. Is it me, or does this seem a little sketchy?