I have been using Flippertools.com(lol) lately to see BOs but I just tried it right now and it’s just showing the same price the item started at. Lame.
An alternative will probably show up, the API seems unaffected and still gives you the correct accepted offer price so all the prices on pokemon price are unaffected.
The ability to look at the submitted and declined/accepted best offers publicly via the eBay site seems to have been completely removed though. Most sites like watchcount probably loaded the page and pulled out the values to display which is why their sites broken now.