You can purchase CELSIUS-DEGREE-TOKEN from these places
Go to Uniswap
Uniswap is a secure platform that makes it easy to buy, sell, and store cryptocurrency like Bitcoin, Ethereum, Stellar Lumens and more.
Go to Bitfinex
The largest and most advanced cryptocurrencies exchange
Go to Bittrex
Bittrex is one of the larger crypto to crypto exchanges offering a large number of trading pairs into bitcoin - including all the major cryptos such as darkcoin, nextcoin and litecoin
Go to Bitstamp
Bitstamp is run from the United Kingdom and is one of the most popular fiat to Bitcoin exchanges.