Given that $50 is about all I have left after paying my taxes today, this is spot on.

Here's my kit:
Item Cost
Heet Sheet 2 Person Blanket $4.50
Adventure Medical Pocket Medic $5.59
Mini Fox 40 Whistle $4.50
Bic Lighters (2) $2.00
1 Liter Soda Bottle filled with water Free
2 Granola Bars $1.50
I Sheetrock Knife with Blades $5.00
100' Mason Line, Nylon, Bright Yellow $4.00
LED Flashlight $10.00
Plastic Trash Bag $0.50
Flat Duct Tape $2.00
Chapstick $1.50
Zip-Lock Bags, 3 (Gallon) $0.75
3 Candles $1.00
1 Metal Cup $2.00

TOTAL $44.84

Now I could also buy a ready-made kit from REI for less than $25 and add $25 worth of stuff to it!
http://tinyurl.com/352jc