$428.80 w/ Cashrewards (8% off) or $420.39 w/ Shopback (10%).

There have been some previous deals for Vega 56 for another ~$60 (which adds freesync and trades blows with a GTX 1070ti/1080) but this is a solid price for an aftermarket gtx 1070.

edit: updated cashback prices to be ex-gst.