Until Dell runs out of N900s it seems they are going to slash the prices. Your gain.

http://www.techbargains.com/news_displayItem.cfm/212767

The text of the link:
Nokia N900 Smartphone (Unlocked, Quad-Band GSM) w/ Touchscreen, 32GB Storage $399 Free Shipping , Jun. 18 10 AM

Dell Small Business has the Nokia N900 Smartphone (Unlocked, Quad-Band GSM) for $399.00 Free Shipping after Coupon Code: JFRPKFQ9WHT01G (Exp 6/20). Tax in most.

Features 600MHz processor and up to 1GB of application memory; 3.5" touchscreen; 32GB storage; 5MP camera; 802.11b/g + bluetooth; A-GPS; Maemo media player; FM transmitter