There used to be highlighted colors to distinguish buy/sell on Agora LII. The colors disappeared many moons ago. I suggested that koala send a question to Agora.
As to the 25K observation, LII entries are an aggregate at the same price..in other words, all trading services combined for a trade at the same time/price.
If someone places a buy/sell for 100K and it fills in 10K chunks, it can give the impression of a $17 trade....not the case.
This is how Agora explained it to me a couple of years back as I had the same concern you did.
Hope this helps.