Yes, very little. The receiver for phone option could keep things down to around $60 depending on the day - excluding any additional cost of a battery and tripod at the target end. The combination below for example should work out to 300 metres. Add a patch antenna for 1000m and still only $70.
Camera, NZ$16
https://www.banggood.com/Eachine-100...r_warehouse=CN
Replacement zoom lens, NZ$6
https://www.banggood.com/16MM-M12-12...r_warehouse=CN
Transmitter, NZ$17
https://www.banggood.com/Eachine-TX5...r_warehouse=CN
Receiver for phone, NZ$23
https://www.banggood.com/Eachine-ROT...r_warehouse=CN
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