Table 7. Costs of consumables/external sequencing for three different methods used for the identification of the 38 individuals of the three exotic species found in this study (adapted from Ardura et al. [53]).

Spanish salaries for laboratory technicians were taken from the official Resolution 2000 BOE 49 of 26 of February of 2015.

Cost of consumables and external analyses
	Visual	DNA barcoding	Metabarcoding
	Fixative	Extraction kit	Extraction kit
		PCR products	Library/Sequencing/ Bioinformatics
		Sequencing
Estimated cost	1€ x 38 = 38€	5€ x 38 = 190€	194€* x 2 (two ports)
Total cost	451.5€	519.5€	438€

* Cost by metabarcoding sample