Low Cost RF Transmitter and Receiver Setup x 100 LEDs controlled

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looking low-cost approach controlling 100 leds via rf.  these leds battery powered , need blinked on , off , preferably faded, each being controlled separately.  @ short distance transmitter yet unable wired. 

i trying figure out how minimize costs , yet still able control these 100 leds. suggestions?

so each led, in addition battery, need rf receiver , small processor receive addressing information , determine if led being addressed.  can use attiny85  ($1.18) processor, virtualwire library sending messages , cheap ook rf receiver raw data.  receivers can via alibaba.com $0.85 each:
http://www.alibaba.com/product-gs/268050244/rf_receiver_kst_rx300r.html


Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > Low Cost RF Transmitter and Receiver Setup x 100 LEDs controlled


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