thank you for this! am not trying to get hold of such data, but rather trying to understand how one would even approach modeling associated costs. people usually talk about labeling services, but nobody mentions the costs for actually getting the data itself. just looking for a reference to quote an order of magnitude ...

thank you very much for the ellaborate response! are you aware of any literature, even if informal, that goes into details about the whole process with any type of rough estimates?

have you seen anyone selling datasets? I found one webpage that openly lists prices, everything else seems rather closed :( Everyone does per-user pricing