No, Brick Searchers are NOT guaranteed a profit but if one is lucky you can break even (if you sell some of the notes you find). On the ODD occasion you might be really lucky and find something that is worth more money.
But.... Sometimes you might go through MANY MANY MANY bricks before you find a single thing.
The fees are getting higher and higher as well.
Friedsquid. your situation is VERY common. I actually don't know ANYONE who have gotten a supply of bricks on a regular basis and have is last more then about 6 - 8 Months before they cut you off. Setting up your "network" of branches and lining up everything is VERY tricky and time consuming. And it is one large House of Cards that is ready to collapse at any time.
Some searchers go through hundreds of bricks a year and it is ALWAYS a challenge to keep the house of cards held together by a thread.
Do not be discouraged but it is an uphill battle the entire way.
Just as a side note, Fees are getting so high that many people have quit doing bricks because it is impossible to gain a profit from it. At some of these rates you would need to sell a Replacement for $3000 each to try and break even. With Replacements getting even harder to find now this will get even worse.
This is another reason people MUST understand about the rare Replacements. They ARE hard to find and you have most likely spent THOUSANDS of dollars in fees getting bricks that did not yield ANYTHING before find one or two Rarer Replacements
My Article all about Journey Series and Replacements is complete and is in proof reading stage before I will post it for everyone. It should answer a lot of questions.