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Currently 22BTS on the market.

Check out this website for more detailed info: https://cryptofresh.com/a/BUILDTEAM

Nice, but what's the purpose behind bidding for Steem? Is it to increase awareness of Buildteam tokens?

This is the way we pay salaries. All our team members get BUILDTEAM tokens and each month we share a part of our profits with token holders. And as a non team member you can buy tokens on the market and participate in the bidding. So the reason is getting a profit.