CoinDeal is not a good exchange in my opinion. They don't have a lot of reputation. I don't think it would be a good idea to go with such an exchange token for investing. In long run, you may lose the BTC you invested.
CDL has a price of around 200sats just a few months ago and after launching staking feature it goes to 500+ sats but for now it's traveling from 300~400 sats for past couple of weeks. So bit of confusion.