PART                  QTY        DIGIKEY REFERENCE          PRICE in $$
1. Hall effect sensor    1          AH183-WLDICT-ND            1.50
2. Tactile switch        1          KSC421J 70SH LFS           0.50
3. Capacitor 100nF       2          C1005X7R1A104K             0.24  (buy 10)
4. Capacitor 22pF        2          GRM1555C1H220JZ01D         0.19  (buy 10)
5. Capacitor 1uF         5          C1005X5R0J105K             0.42  (buy 10)
6. MC ATTINY45           1          ATTINY45V-10XU-ND          2.20
7. Connector header      1          S9005E-06-ND               0.91
8. LCD controller        1          568-5030-ND                2.88
9. LCD VIM321            1          153-1101-ND                4.20
10. Battery holder 2xAAA 1          2468K-ND                   1.31
11. Project enclosure    4"x2"x1"                              2.99
    http://www.radioshack.com/product/index.jsp?productId=2062280      
12. Phone jack           1          CP1-3533-ND                0.79
13. Phone plug           1          CP-3502-ND                 1.04
14. Crystal              1          ABS07-32.768KHZ-T          1.58
15. DC/DC converter      1          TPS60312DGSR               3.33 
16. Slide switch         1          EG1906-ND                  0.73