Check My Math: Cheapest Way to Buy TB?

[magisternautaque]

Me and wife.
Purchased 2 Incredibles 4/29/10 on 2-yr contract. 14 months left.
I want a Thunderbolt.
Is this the cheapest way?

Add a line $10 x 14 = $140
Switch old line to old dumbphone.
Get TB on 2 yr contract = $250
Sell old Incredible = -$200
Total $190

Now I just need to get an old used Verizon dumbphone.

 

[atakin77]

That new line would be $240 - $10 *24 months. $250 for the phone = $490.

Do it on a 1-year. $10 / month * 12 months = $120. $320 for the phone = $440.

Sell your Dinc for $200, total cost on a 1-year is $240, plus you now have another upgrade to play with.

 

[Green_Laser]

Nice arithmetic haha! Looks like problem solved.