Pi is still under enclosed mainnet which means you can not transaction pi coin.  except from pi wallet to wallet but not listed for trading in any exchanges. Morover the price you are trying to sell is high @$17. Do not be decived by the hype. There were many mined coins that has a huge price before open mainnet dey fall to smaller price. Example was Satoshi which later was called CoreDao which the amount was $650 in metamask in testnet and became $5 in open mainnet which has fallen to 0.399 today. So it's unpredictable if you sell and regret later or sell and never regret.