Paramount+ and HBO Max offer two possibilities to start. $9 and $12 per month respectively. I'll watch the tourney through Paramount+ (free with W+ and didn't you mention something about Paramount+ through T-Mobile? I may be confusing that with some other offer when we were talking about this a few weeks ago.)
DirectTV has a free week trial of HBO Max if you are still there.
Bottom line: If you don't get the Turners, is it worth a 12-pack for a month of tournament basketball? (I have no clue what a 12 pack of piss-water beer costs.)