Table 1.

Costs of terrestrial mammal inventory for each survey method and year (US $).

Method	# of eDNA samples or camera sites	Re-usable equipment	Single-use equipment	Labour and lab work	Logistic	Total cost	Cost per sample or camera site
CT 2018	57	$11,970	$503	$24,800	$858	$38,273	$671
CT 2019	57	$840	$482	$23,600	$821	$25,922	$455
eDNA 2018	50	$1,053	$4,746	$19,203	$948	$25,950	$519
eDNA 2019	36	$3,498	$2,721	$13,858	$441	$20,465	$568

The table shows a summary of the costs for each survey method and year. Total cost calculation includes four budget components: re-usable equipment, single use equipment, labour and lab work, and logistic. Re-usable equipment includes camera traps, water pumps and rechargeable batteries, single use equipment includes AA batteries and eDNA sampling kits, labour and lab work combines staff time for field work as well as time spent for data analysis, logistic includes expenses related to local transportation from headquarters to field study sites. Cost per eDNA sample or camera trap site is obtained by dividing the total cost by the number of samples or sites. See Supplementary Table 4 for detailed description of each cost component.