how much is the nextel i870 phone?

Answer 1

You can't but the i870 from Nextel anymore. Its more than 2 years old--and cell phones generally have a shelf life of a year-to 18 months.

You can still buy it from resellers, if you can find one. I wouldn't take any bets on the price you'll pay.

Looks like the Motorola i880 is an update of the i870. It runs $299.99 after instant rebate with a new 2yr plan. (More if bought for an existing plan before rebate eligibility starts...)