Tera gold connection on the server population will explain how the number of tera account on a realm affects the market’s economy.
Population versus tera gold economy
In every MMO the number of players ALWAYS affects the currency or the market’s economy as it will tell how much the money can be made from buying and selling. Same with Tera Online, the more 
in it, the more tera gold that can be made. However, in tera online the realm that has the full or highest population often puts you in queue. Queuing means that you won’t be able to log in.
Note of the following:
-Realms that are usually at “Low” population are often very welcoming of new players.
– Realms that are usually at “Medium” populations offer a compromise between extremes.
– Realms that are usually at “High” populations can be rather discouraging of newer players (and not just those who are inexperienced with TERA).
– Realms that are often at “Full” populations are much like realms at “High” populations, but even more.