While still only on Sprint, the Pixi and the Pre are in the middle of a price war between Amazon and Wal-Mart each trying to undercut the other with low, low prices in a bid to grab more online market share.

PreCentral.net has been tracking the Amazon-Walmart price war as it relates to the Pre and Pixi, which are listed on the official Sprint.com Web site for $149 and $99 respectively (with two-year contracts), although only after a $100 mail-in rebate (that’s the part where you have to fill in the paper form, cut the UPC off the cardboard box, and wait six to eight weeks for your refund; ugh).

Thanks to the battle between the two online shopping giants, however, both the Pre and the Pixi have been seeing steep discounts over the past couple of weeks.

The price tags vary from day to day, but as of Tuesday morning, I spotted the Palm Pixi for just $25 (again, with a two-year Sprint contract) on both Amazon.com and Walmart.com … no mail-in rebate required.

As for the Pre, which sold at launch for $200 with service, Walmart.com currently has it listed for $99 with a two-year contract, while Amazon is down to $80 with a two-year service agreement. (PreCentral previously found the Pre on Walmart.com for $75, but the price must have gone back up.)

Read the full story at Yahoo.