Many CB antennas on clearance. I have the following fitted to my ute and currently selling for a third of rrp
Aerpro Heavy Duty Enclosed UHF Antenna in PVC Tube 4.5dBi Frequency: 477Mhz
$30.95 ($93.48 at Supercheap)
Aerpro UHF Antenna Coil Loaded Whip - 4.5dB, CBA4S1
https://www.repco.com.au/en/brands/aerpro/aerpro-coil-whip-a…
$8.95 ($22.95 at Supercheap)
Other clearance antennas also available