Why not purchase in their offcial website with lower price now :Flash Sale 2PCS Flipsky Battle Hardened 6374 Motor 140KV 190KV 3500W f – FLIPSKY
Because I needed them last year, not now 
Also it shows up as $162 without shipping for me on their official site, which is the same price I paid for mine with shipping included, so it’s not actually cheaper.
Cheapest flipsky are on banggood