UFC 331 has two lines worth checking: Van vs Pantoja 2 and Tsarukyan vs Ruffy....

https://edwinhmva443.theglensecret.com/how-do-i-shop-lines-when-one-book-has-ruffy-280-and-another-has-265

UFC 331 has two lines worth checking: Van vs Pantoja 2 and Tsarukyan vs Ruffy. We compare prices across books, including Tsarukyan at -325, to show where the number moves and whether shopping around beats taking the first line you see.