This is a thoughtful question, live price feeds should be available
There's one posted by this user everyday on wall observer, his name Chart Buddy of which many thought about hi using a bot system to make an automated post because he does that often, though to me it's not an offence but maybe there's more expected of him in that regards than he gives you ca see from this post quote below
You can check this thread -
Wall Observer for Bitcoin price updates. It is done by
Chart Buddy every hour. As of now, there are many websites and apps that can give you realtime updates of Bitcoin prices. I do not think there is any need of realtime Bitcoin price update on the speculation board.
I would suggest it on the first page of the forum where people visiting would be able to take a quick glance.
If it's not going to be under a board where people can post under it then i think it's fine, because we have to consider the spammers and those trolling together with shitposter not to constitute posting there if it's under a board, if Theymos will go by what has been suggested then it's something new entirely and demand more work on it to get set.
The price feeds should be priced with major world currencies including gold as it's been done with websites dealing with assets.
There may be some comparison with other asset but know that they are not used to determine the bitcoin price.