Have you noticed how expensive some of the items sold by vendors? 99 millions zeny is almost norm for relatively good quality items. Some really good ones (god items, MVP drops, etc) can sell for hundreds of millions. Imagine you can collect 200,000 worth of items per day; you get only 73 millions in one year, and 730 millions in ten years! /omg
If the developers don't help us to reduce the price of expensive items, sooner or later players will find it dull to play as most of them are at losing end without being equipped properly. Only those players with billions of zeny can afford decent equipment and cards. And mind you, good equipment accounts for more than 60% of total game (be it WOE, PVP, MVP, PVM, etc) experience & battle effects.