nRf24L01+ Questions

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1) why nrf24l01+ chips on ebay cheap? example on ebay,
http://www.ebay.com/itm/10pcs-arduino-nrf24l01-wireless-transceiver-module-/251062580786

you can 10 of them $1.50 piece if try buy nrf24l01 ic $4 bucks each. cheapest wireless communication method thats pretty simple? rfm12b's more expensive , dont seem add important features.

2) ask above since want create nrf24l01+ circuit current project rather using external chip make project messier , larger. there anyway me create same circuit (i know have circuit in datasheet) same price chips can buy on ebay?

i assume cheap ones clones. i've bought in past reasonable success, smd placement , soldering wasn't brilliant quality (and boards looked have been corrected hand in couple of cases) , there couple of duff units in batch. felt rather guilty supporting ripping off companies sell genuine article. they're cheap, though. it's hard imagine how source parts that, let along assemble , ship whole thing.


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