As it is a non-fungible token, it's not listed in exchanges as other fungible tokens and coins; however, you can buy them in the official site or also on Opensea. IMHO, twitterbot.eth is a good deal, but, as always, DYOR if it makes you more comfortable.
Seems like I really do not have much expertise on this niche. I will pass however if you have any token or coin which is easily transferable to any of the exchangers I mentioned in my last post then count me in.
Good luck.
Edit: or if you know anyone in the forum who I will trust too then ask them to be your granteer. I may reconsider if that fits my satisfaction.