That's not the way it works.

Tron-Europe are SRs. They are rewarded with TRX when they broadcast a new block. They keep those TRX.

Then they give supporters TERC tokens valued at 500% the amount of TRX they were rewarded and which they kept.

There is no real use for those TERC tokens and the market is just pricing it because they are given to supporters on a certain ratio.

It is a useless token without value and which unique reason of being is to be a claim so more people vote for Tron-Europe as a SR.