Our fees are anwhere from $70 to $375 and is sometimes increased to off set the money the shelter has had to spend on the dog or cat while it was at the shelter. This includes spay/neuter, shots, tags , microchip and other minor vet cost if needed.
I've heard countless times why people refuse to adopt because of the cost, they can always get a free dog if they just want a mutt, as for cats they're a dime a dozen in the newspaper ads so no one will pay to adopt for that price. If the shelters asked for a donation or charged a nominal fee they would find homes much easier.