Only by looking at your actual use and the specifications and thickness of the cable tray can you get an accurate price.
Price reference of some common bridges:
100*50 trough cable tray; Thickness of 0.8mm；; 9.8 yuan/meter
200* 100 trough cable tray; Thickness of 0.8mm；; 18.8 yuan/m
300* 100 trough cable tray; Thickness1.0mm; ; 30.7 yuan/meter
400* 150 trough cable tray; Thickness1.2mm; ; 53.3 yuan/meter