"Issues raised from the database";"Primary research questions";"Examples of project papers" "Cost estimates are multiple and depicted by numerous taxonomic, geographic, temporal, methodological, and habitat-related variables";"What is the current distribution of the costs of invasions worldwide? Which ecological and societal variables are currently driving the distribution patterns of these costs?";"Descriptive and inferential (e.g., meta-analysis, GLMMs) approach considering specific descriptors of the InvaCost database" "Knowledge of cost information is fragmented as well as spatially and taxonomically biased";"Which information and data are missing from the InvaCost database? What insights could they provide?";"Synthesis of costs published in local, non-English reports globally; development of multidimensional extrapolation-based approaches" "Relevant analysis of the cost data requires strong caution and several steps of data processing";"How should the cost data be analysed to take into account the time lag between cost occurrences and cost reporting as well as the temporal dynamics of invasions?";"Development of a R package that provides all basic functions and processing steps for fully analysing the costs of invasions" "The economic costs of invasions are more complex and diverse than expected";"How may invasion costs be harmonised to be unambiguously understood in the same way by different audiences?";"A global conceptual, interdisciplinary framework for the economic costs of invasive alien species" "Cost information is not stand-alone to assess the whole impact of invaders for prioritisation and management actions";"How can cost data help to ensure a standardised assessment of alien species impacts across regions and to track potential changes over time?";"Context-based insights for invader management from linking cost estimates to established indicators of alien impacts worldwide (e.g., GRIIS, SEICAT)"