I have been pricing out a trip from LAX-EWR-FLL for the past few weeks to get an idea of the average fare range (ideally in Business First for the PS and First for the others) on specific dates. Since I have been searching in the early morning hours, the prices have differed from browser to browser at the same time. It also only shows full fare options or says none available for every flight that day. For example. for lowest Economy, it shows all flights LAX-EWR segment as $858 outbound, yet if I try another browser, it might show $175 lowest economy. On another, it shows lowest Business on the LAX-EWR segment as $599, but on the other browser shows it as $1,000.

There also seems to be a discrepancy in pricing trips round-trip and multi-city and one-way. For multi-city, shouldn't the segments price out the same as one-way? (I am also getting the full fare option only for the multi city searches too and one time got only full fare economy options and discount first on another where the lowest Economy from EWR-FLL was mid $600 and First was mid $300.)

Has anyone else experienced this today or lately? It is driving me crazy since I want to book a trip and don't have confidence in what I am seeing.
(In case it mattered, I cleared by cache and have expert mode enabled and have the add-on for it). Thanks.