500000 an hour
if you ensure that you are working throughout the hour.
For this money making method, one requires the following:
Wolf Whistle
Summoning Level 63
For one hour of work, you require the following items:
1 Spirit Cobra Pouch
580 Eggs
580 Ophidian Incubation Scrolls
Walkthrough:
Summon your familiar. Instantly use 20 scrolls to create 20 cockatrice eggs. Every 30 seconds, you can use 5 scrolls. It is advised to have 25 inventory slots filled with eggs, one with the scrolls and the remaining two left empty or with items to cast high alchemy on. Make sure you bank when all your inventory is converted. It is advised to stay near a bank which is near to an obelisk (such as Edgeville), although you should have no need to restore your points for the hour.
Results (As Of 16th September):
1 x Spirit Cobra Pouch (1904:2104)
580 x Eggs (99:104)
580 x Ophidian Incubation Scrolls (277:307)
Total (Min) = 219984
Total (Max) = 240484
580 x Cockatrice Eggs (1161:1283
Total (Min) = 673380
Total (Max) = 744140
Profit (Min) = 432896
Profit (Max) = 524156
Notes:
The only way to aquire the maximum profit is if you ensure that you instantly cast your first five scrolls and ensure that you always stay below 45 special points. Otherwise, you will end up with losing point regeneration time and the values have been calculated for the maximum regeneration.
You can substitute purchasing the scrolls with purchasing the pouches and converting them yourself. This saves on some money and also awards experience.
If you have spare God bird, penguin, raven or vulture eggs, you can use them for more money! Raven eggs alone sell for almost 50000.
If the price of the cockatrice egg was to fall below 500 each, this method will stop being reliable.