large discrepancies in crypto values depending on the exchange/platform... (7:20pm pst - $cad)

#xbt ( #bitcoin)
@coinbase - $21,080
@quadrigacoinex - $20,199

#ltc ( #litecoin)
coinbase -      $400 
 -  $374

#eth ( #ethereum)
#coinbase -  $935
# - $885