Blox Fruits values are usually expressed in BFV (Blox Fruit Value), a community shorthand that lets you line fruits and gamepasses up against one another on a common scale. Several things feed into where a fruit lands. Rarity is the foundation — Mythical fruits like Dragon, Kitsune, Dough, Gas, and Yeti spawn least often and generally anchor the top of any list — but rarity alone does not settle it. Role matters just as much, and traders tend to split it between PvP performance and grinding efficiency, so a fruit built for combat can rank very differently from one favored for fast leveling. Layered over all of this is the Physical-versus-Permanent split: the Permanent version of a fruit typically carries a much higher reference standing than the Physical one, because it never disappears when you die or eat another fruit and is far harder to obtain. Always compare like for like — Permanent to Permanent, Physical to Physical.
Read the ranking as a demand signal, not a scoreboard of raw power. A fruit can be strong yet slide down the list if the meta shifts, and another can climb simply because many traders want it right now. To judge whether a trade is balanced, add up the reference values on each side and see how close the totals are — that is the "WFL" (Win / Fair / Loss) habit Blox Fruits traders live by. Roughly even totals read as Fair; a lopsided split favors one player. But these numbers move constantly as updates rebalance fruits and hype rises and fades, so a list is a starting point for negotiation, never a guaranteed rate. Trust your own read on whether a swap genuinely leaves your inventory better than before, and never let a number pressure you into a deal you are unsure about.