I am trying to figure it out myself. Is it possible the clearance hasn't started yet? I am seeing that almost every target has the Rainbow Six Siege edition in stock but the price is listed as N/A. Maybe about to get halved to clear inventory? DPCI: 207-31-0016
Best bet is usually to find a B2G1 sale around the holidays. The Wii U pro controllers are typically in top shape used. I bought 3 on BF for $80+tax. So basically about $27 each. If I recall, they might be included in the Wii accessories for the current sale at GameStop. Maybe maybe not...