As of Oct 2013: typical cost $0-$65. To verify cost for a patient, verify with the pharmacy they fill prescriptions at as cost varies.

Links to information from the manufacturer:

Apixaban:
http://packageinserts.bms.com/pi/pi_eliquis.pdf

Dabigatran:
http://bidocs.boehringer-ingelheim.com/BIWebAccess/ViewServlet.ser?docBase=renetnt&folderPath=/Prescribing%20Information/PIs/Pradaxa/Pradaxa.pdf

Rivaroxaban:
http://www.xareltohcp.com/sites/default/files/pdf/xarelto_0.pdf#zoom=100

Other information for medication costs:
www.Needymeds.org