|441,000 per hour|
500 x Baby impling jar (1,135,500)
1,500 x Impling jar (1,576,500)
Elnock Inquisitor at Puro-Puro will give you three empty impling jars in return for any impling-filled jar. Puro-Puro is most easily accessed from the central wheat field in Zanaris. From either Castle Wars or Edgeville bank, the fastest way to reach the wheat field involves using the Slayer ring to teleport to the Fremennik Slayer Dungeon where a nearby fairy ring is located. Starting out with nine filled impling jars at either bank, head to the fairy ring, use it, and run north-east to the wheat field. Enter the crop circle, being sure not to accidentally click on some wheat, and trade Elnock Inquisitor in the south-west corner of the main area. Click the jarred impling option at the bottom of the interface and confirm, and repeat this eight more times. Teleport back to either of the said banks, bank your jars and repeat.
Other types of impling jars besides baby implings can be used (and are often cheaper), but baby impling jars seem to be the easiest to buy. Once enough jars are obtained, sell them on the Grand Exchange. Because there is often not instantaneous demand for them, maximise your profit by buying one first, and selling the rest of your jars back for just below that price.
It is strongly recommended to check the live prices on the Grand Exchange before making large investments in any method.
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