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thanks, what is the cas latency of the original RAM ?
also would the 1800MHz work ?
 
Great Deal from TransInt'l

It's a bit of a late response for the OP, but hopefully others may benefit.

Transintl offers 16GB (2x8GB) DDR3 12800 RAM modules for $79 + $8 s&h here.

The lowest price I've seen on NewEgg is $115 w/ free shipping.
As a reference, OWC charges something like ~$150 for their Mid-2012 MacBook Pro kit.
 
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