Since the advent of Best OSRS Gold site the grand market, items can be exchanged for cash easily, and can effectively be considered the exact same thing. Say that (hypothetically) you require 100k cannonballs for slayer and can afford 200k, at 250gp each. Should you invest 25000k 100k cannonballs and they rise to 300gp each, then you effectively have 30000k, which you may convert to money or use. Likewise, if the cannonballs instead fall to 200gp every day, you may effectively have 20000k, which you may convert to cash or use.
Doubling the investment simply doubles the return, whether it be positive or negative. If you think cannonballs will rise, then invest as much money as you need to them: the greater the investment, the higher the possible profit on whatever you do not end up using. If you wind up purchasing fewer cannonballs than you require, then if they rise you will need to cover the remainder in a greater cost.
Basically, if you believe cannonballs will rise, then invest in them regardless of how many you think you will need for slaying. If you are unsure if they will rise, then keep your cash as money and purchase cannonballs as you go rather than stockpiling.
Over the past week, I've noticed the slow growth of stray clockwork cats everywhere. I saw one running round the wildy a few days ago amongst all the PvPers. I guessed it was only someone's follower, even though it was running loose and not after anyone (I tried to catch it imagining it did not belong to anyone, it the match said,"That's none .") . There was about 4 or 5 of them running free about the GE. Other areas, too.
Has anyone else noticed this? Is that a gimmick by Jagex for folks interested in crafting (or just buy their very own cat)? Or should you die using a feral cat after you, does your clockwork cat turned into a"stray cat" wandering around in that place for some time instead of just disappearing the way most lost things do (but how often do people die within the GE)? (As an aside, have you ever discovered if you've got a real cheap RuneScape gold cat following you, it'll get into fights with stray dogs which you pass, lol?)