One of the many ways to make money for your daily tele license or weekly merc. room licenses is by using the trading post.
Requirements:
Level 96
Approx 50m-100m
TP license helps so you don't get spammed with travel agency fees
Guild town helps so you can help the Guild fund
How to:
Go to market, Search> Trade Permission Cost 1m for all lvls
<img src="http://img686.imageshack.us/img686/3910/444h.jpg">
Next follow this Spreadsheet to find products to buy/sell
<a href="http://spreadsheets.google.com/pub?key=rD3FpDldSMsRMMHFms8_OMA&single=true&gid=1&output=html" target="_blank">List is HERE</a>
Next go to any town, Open Town tab> then go to the trading post button
There is a Simple way to choose what to trade
Step 1: Go to the origin town for any product(Lists 3 towns in the description or look in the list)
<img src="http://img707.imageshack.us/img707/3531/111l.jpg">
Step 2: Look for the highest # in stock, that means that is the best to buy
(Usually you want it to be between 5800-6500)
<img src="http://img686.imageshack.us/img686/6233/7777.jpg">
Step 3: Go to the list and find the product your trading, then on the right will be towns to sell to
Step 4: go to as many towns as you can that buy the product and find the lowest quantity of the item your selling
<img src="http://img707.imageshack.us/img707/4518/222.jpg">
Step 5: Go to the original town and buy 50 of that product
Step 6: Go to the town with the lowest quantity and sell there
Step 7: Spend your free money
Other tips:
-Typically you want the difference between the buying and selling price to be 200-300k that makes you around 10m-the license and travel agency fees.
-Usually the best products are in the 1m-1.5m range of buying price
-Remember it doesn't always make the most money with the higher costing products due to the tax you pay on all of the buys/sells
-If you trade products in your guilds town you get all of the tax from the transactions
-The buying price of the town is 90% of the selling price
That's it, I hope you understood it

hope you keep on making money