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Clockwork
This is a static calculator.
It does not take user inputs, but it does use changing prices from the Grand Exchange Market Watch. If prices appear to be outdated, purge the page by clicking here.

This calculator calculates the cost per bucket load for making supercompost. It assumes that the buckets are recycled. It includes methods using compost potion (currently figuring 74.32 coins per bucket, allowing for the sale of the empty vial), but not special purchases or growing from seed etc., as these represent opportunity costs of selling the component on the GE, as well as the work involved.

Excluded also are non-tradeable item like White tree fruit and Peach, and the Compost mound's special move (although this could be added).


Cost of using peaches for supercompost with bones to peaches spell tablets: the find the cost of using peaches for supercompost multipy 27, (the amount of inventory spaces), by the cost of bones (currently 61 coins). Add the cost of a bones to peaches tablet to this (currently 661 coins), and divide the total by 27. The current cost of using this method for supercompost is: 85 coins per peach.


Notes:

  1. Weeds are often to be found lying around allotments (although a good gardener will grow very few of their own) and weeds fill the compost box faster.
  2. While you can't make compost with noted items, you can take sacks of cabbages for example making them very convenient as well as cheap (unlike baskets of strawberries which are merely convenient).
  3. Items listed on the grand Exchange are sometimes "bought out" this is particularly the case with compost potions.
  4. Compare these with the current cost (720) of buying Supercompost.
Item Cost Potion cost Total cost Net profit (or loss)
if sold on GE
Fever grass 345 74.32 419.32 300.68
Primweed 309 74.32 383.32 336.68
Stinkbloom 347 74.32 421.32 298.68
Tansymum 105 74.32 179.32 540.68
Lavender 275 74.32 349.32 370.68
Curry leaf 554 74.32 628.32 91.68
Seaweed 19 74.32 93.32 626.68
Banana 213 74.32 287.32 432.68
Orange 924 74.32 998.32 -278.32
Lime 664 74.32 738.32 -18.32
Lemon 918 74.32 992.32 -272.32
Cooking apple 788 74.32 862.32 -142.32
Cabbage 255 74.32 329.32 390.68
Raw potato 356 74.32 430.32 289.68
Onion 142 74.32 216.32 503.68
Wheat 184 74.32 258.32 461.68
Grimy guam 336 74.32 410.32 309.68
Clean guam 341 74.32 415.32 304.68
Grimy tarromin 22 74.32 96.32 623.68
Clean tarromin 39 74.32 113.32 606.68
Grimy harralander 94 74.32 168.32 551.68
Clean harralander 171 74.32 245.32 474.68
Grimy marrentill 226 74.32 300.32 419.68
Clean marrentill 137 74.32 211.32 508.68
Grimy ranarr 2171 74.32 2,245.32 -1,525.32
Clean ranarr 2330 74.32 2,404.32 -1,684.32
Magic roots 5057 5,057 -4,337
Maple roots 261 261 459
Oak roots 310 310 410
Willow roots 233 233 487
Yew roots 1109 1,109 -389
Calquat fruit 177 177 543
Coconut shell 47 47 673
Jangerberries 731 731 -11
Bittercap mushroom 8999 8,999 -8,279
Papaya fruit 4224 4,224 -3,504
Pineapple 183 183 537
Poison ivy berries 2601 2,601 -1,881
Watermelon 54 54 666
White berries 1438 1,438 -718
Grimy avantoe 1188 1,188 -468
Clean avantoe 1346 1,346 -626
Grimy cadantine 2963 2,963 -2,243
Clean cadantine 3106 3,106 -2,386
Grimy dwarf weed 1947 1,947 -1,227
Clean dwarf weed 2083 2,083 -1,363
Grimy kwuarm 5187 5,187 -4,467
Clean kwuarm 5355 5,355 -4,635
Grimy lantadyme 2891 2,891 -2,171
Clean lantadyme 3063 3,063 -2,343
Grimy snapdragon 1540 1,540 -820
Clean snapdragon 1688 1,688 -968
Grimy torstol 3469 3,469 -2,749
Clean torstol 3674 3,674 -2,954
Grimy toadflax 5318 5,318 -4,598
Clean toadflax 5497 5,497 -4,777