Tell that to Sunny Singh, the other Vimeo user who was featured in the Verge article, who did the math himself and had to admit that he was costing Vimeo $2500/yr.
If so, he is not saying that he is costing Vimeo $2500/year, he is saying what amount of bandwidth he has "consumed"/"produced" from Vimeo, which for sure doesn't cost Vimeo $2500/year, as otherwise they would be bankrupt by now. They pay static sums for the internet connection, no TB/$ crap that people using cloud are used to.