Got another order in with Yourduino.
Note that the chips and thermistors are package of 5 for from 75 cents to $1.50.
Order Summary:
Product
Qty Price Subtotal
2.4GHz Transceiver Low Power nRF24L01+
2 $2.75 $5.50
AC Line Power Supply: 9V 1A
2 $3.00 $6.00
AC Line Power Supply: 3.3VDC 2.5A
1 $4.50 $4.50
5.5mm x 2.1mm Plug for Arduino External Power Connector
4 $0.35 $1.40
LM324 4x opamp (single supply) (Pkg of 5)
2 $0.75 $1.50
LM386 Audio amp low-voltage (Pkg of 5)
2 $0.75 $1.50
NE5532 Low Noise Dual Op Amp (Pkg of 5)
1 $1.50 $1.50
74HC165 8x Parallel-In Serial-Out Shift Register (Pkg of 5)
1 $1.50 $1.50
Thermistor 10K (5ea)
1 $1.25 $1.25
AC Line Power Supply: 5V 1A
1 $2.50 $2.50