Since you have selected a particular breed you would like to adopt I would suggest you go to the breeds parent club website and look at their rescue sites for adoption. Chances are you will find what you are looking for and will be able to adopt from them. I am sorry you have had this sad experience, and wish you the best in finding a wonderful dog to adopt!!!
When a purebred dog comes into the shelter/humane society and that shelter calls on breed rescue they are opening a spot for another dog in their facility. Breed rescue works with the humane societies and other shelter organizations in that way. So when a shelter says they are holding a dog for breed rescue what it means is that they have contacted another breed specific rescue group and the dogs placement is now that groups responsibility.
You also have to remember that it costs these rescue groups money to feed and house the animals in their care. The larger groups such as the humane societies receive funding from other sources besides just from adoptions. The smaller groups often do not receive so much funding for support, thus their adoption prices tend to be a little more. There is more than just feeding involved as well, but the daily care and often times medical expenses involved is included. Dogs don't spay and neuter themselves, and fleas don't just stop hanging around once they enter a shelter. So I wouldn't say adoption rates are that outrageous when you really consider what all is involved. The shelters are not making money hand over fist and 'selling' dogs. For example, one large breed dog(say a lab or similar size) can eat through a 30# bag of food within a month($40), many dogs entering shelters need flea treatments and baths($45 for time and supplies), someone needs to care for the animal during that month and provide housing(easily $150 when you include what it costs to run a facility that houses multiple animals and requires daily upkeep etc). Right there that is over $200 and that doesn't even take into account any major medical needs that might be involved. So no, the adoption fees that many shelters charge is Not that outrageous.