Most of what lands in your inventory after a few hours of raids is not treasure. It is mastery fodder, and the fastest way to spot a new Blox Fruits player is to watch them hoard a stack of cheap fruits as if the prices mean something.
Here is the line I use, and it has saved me more value than any grinding route. Anything worth more than roughly 1,500 VP on the value list gets traded. Anything under about 500 gets eaten on whatever fruit I am currently leveling. The middle is a judgment call that depends on what I already own.
The fruits that are currency
Leopard at 3,500 VP, Dragon (East) at 3,300, Kitsune at 3,200. These are not really fruits. They are trade chips that happen to be edible.
A single Leopard trades up to roughly a Buddha, a Magma, and a Light combined. That is a grinder, a damage fruit, and a travel fruit. Eat the Leopard instead and you have spent all three on one transformation whose best combo sits behind mastery you almost certainly do not have yet. The fruit does not get better because you consumed it. You just turned three useful things into one.
The fruits that are food
Smoke is worth 30 VP for a reason, and no amount of waiting changes that. The cheap Logias bleed value because the entire server already has them. Ice, Sand, Dark: fine carries through the First Sea, worthless as trade fodder because nobody is offering anything for them.
These are exactly the fruits to eat. Mastery is mastery whether it comes from a 30 VP fruit or a 3,000 VP one, so spend the cheap pull and pocket the expensive one.
The middle, and the permanent question
Between 500 and 1,500 is where it gets situational. Magma at 700, Rumble at 1,300. If you do not own a better fruit, eat one of these and use it. If you do, hold it as a trade chip.
The other wrinkle is permanence. A permanent fruit returns to your inventory after you eat something else, so it never gets consumed. That convenience is worth a premium in trades, but only if you actually swap fruits often. If you main one fruit forever, you are paying for a door you never open.
The mistake that costs the most
The single most expensive thing a new player does is eat a Mythical they pulled at low level, for mastery, on a character that cannot use half its moveset. A Leopard eaten at level 200 is a Buddha-plus-Magma-plus-Light you set on fire.
When something good lands, do not decide in the moment. Drop both sides into the trade value calculator, see what the fair exchange actually is, and then trade for things you will use now. The fruit guide covers which of those things hold up long term.
The wrinkle the value list can't show you
Stock rotation moves the real rate underneath the listed one. The fruit shop rotates roughly every hour, and a top-tier fruit that just left the shop trades for more than the same fruit the day it is back in stock, because availability is demand in real time and the value list lags it. If you are trading away a fruit that is currently out of stock, you are trading near the top of its little cycle. If you are trading for one that is in stock right now, you can usually do better by waiting two days. None of that shows up in the VP column, which is a steady average and not a live price. Read the shop alongside the list, not instead of it.
The fruits you remember are the rare pulls. The fruits that carry you are the ones you trade them for. Knowing which is which is most of the economy, and it is the part the value list was built to answer.