Where does “лицитирати” come from?

лицитирати (Serbo-Croatian) comes from German lizitieren, from Latin liceor, from Proto-Indo-European leyk- — to prepare for sale.

Ancestry of “лицитирати”, step by step

Step	Language	Word	Meaning
1	German	lizitieren	—
2	Latin	liceor	I bid , make an offer; I value, appraise,...
3	Proto-Indo-European	leyk-	to prepare for sale

лицитирати — Etymology, Origin & Word History | Etymology Explorer