The Inq has published some pricing for the new Intel processors:
65nm dual-core Yonah's, 667MHz FSB
T2300 1.66GHz $241
T2400 1.83GHz $294
T2500 2.0GHz $423
T2600 2.16GHz $637
L2300 1.5GHz $284
L2400 1.66GHz $315
65nm single-core
T1300 $209
Ultra low voltage Pentium M
733 $273
The Yonah's are also available bundled with Centrino chipsets.