commercially unreasonable and reversing and remanding for evaluation based on factors such as manner, method, time, place and terms of sale); Garden Nat'l Bank of Garden City v. Cada, 738 P.2d 429, 432 (Kan. 1987) (concluding sale of collateral at automobile auction in which participation was limited to dealers was a private sale and commercially reasonable); Ford Motor Credit Co. v. Russell, 519