Let's say you buy coal,you put in a offer for +10% and note down what it buys at let's just say it buys at 200gp,

Then you sell the coal you just brought for -10% and not down the sell price,let's say 193

(I know they may or may not be the actually prices,I'm just making it simple to understand)

 

You brought the coal for:200---------that will be your selling price.

 

And you sold it for:193----------------that will be your buying price

 

So now you start the flip,

You start of with a small buy amount,let's say you buy 5k coal for 193(you can buy 1gp over to get them faster) you wait a couple of mins and they all buy,then you sell them for 200gp(you can sell them 1gp under to make them sell faster)

 

Then if that works,you should buy the max limit for buying coal of the ge,witch is 25k(like with all ores) buy and 193-194gp wait a couple of mins and once they buy sell them for 200gp and then u make profit and repeat.

 

I only wrote this of the top of my head,there is alot more to know about flip merching,you should read some guides/look at some videos.but the more you practise flip merching the better you will get,as I said there's alot more to know.

 

And don't use the example I used,it was only a example to show you what the basics are.Also alot of merchers use coal,so it would be best if you try to find another item,but coal is good to start of with :)

 

Also,when you are picking a item it is best to pick a stable item,you can tell if the yellow line and blue line(average) on the 30 day graph are not all over the place,If you get what I mean??

 

Hope this helps you to understand the basics of flip merching ;)

(remember to look at some guides/videos) ;)

Except one problem - they won't sell at 200 if they're easily bought at med (if it only takes you a minute to buy like 25k - it's probably not a good item to flip)

 

And your yellow/blue lines have some indication of where the price is going but there are many factors to take into account.

http://services.runescape.com/m=itemdb_rs/Coal/viewitem.ws?obj=453

^Going by that chart, it looks like coal would be an amazing item to merch

However, keep in mind that it's going up in part due to bonus exp weekend

 

So right after the weekend, they're going to start crashing again.

If the item is stable, rising or crashing doesnt really matter that much. But if you can't do the trades in g.e on daily basis, rising items are the best.

@little bug

I only used coal as a example,I know they won't sell a 200 and buy at 193,it's was just easier to use this numbers :)