If you think 68 is close to 99 you are a math noob and fail @ runescape math class. 1-68 Slayer is like only 10% of the way to 99 on a level 3 account when you factor in the 10 years it would take to get that many exp lamps. I would assume that the rest of his non-combat skills are already at 99 and hence he is close to getting all non-combat 99s.
The GE eliminated a lot of the overhead and cost of selling a product... when you bought an item before, you paid for not just the item but also the effort of the person that collected it all so you would be able to buy it all at once.
It's a script... to the person above who said that it is a waste of resources to do this, it's really not because once it's set up it requires little effort. To the person asking about if this takes as long as the rs GE page, the values are all stored somewhere on our end.
sharks are a waste if not all of your inventory is full. Try either pineapple pizzas (22 in 2 bites) or mid-range food like lobsters (12) or monkfish (16) which are half the price of sharks.
Mine are: Hellhounds Greater Demons Steel Dragons Gargoyles (hounds and demons are crowded with noobs and gargoyles are annoying with the hammer; steels take forever.) Also blocked are terrorbirds by quests.
it should start at 0 for all items that would be bought in large quantities (under 10-100k) but 1 for more expensive items; who would buy 10 guthan warspears?