It can be hard to find toys made of natural materials for an affordable price. Going by the less is more theory, which I subscribe to, you will still save money in the long run buying fewer better quality, more costly toys. These toys tend to last, and some of the more open ended ones can be used by the same child for years and years. Sometimes it's still nice to find a bargain, and often it's just a matter of knowing where to look. Local craft fairs are a great place to start.
This past weekend I visited a craft fair and struck up a conversation with a lovely older man who crafts wooden toys, mostly vehicles. He sells them at small craft fairs, and donates some to local schools.
I love all the little details on this train of his. There are wheel covers on all the cars, and little sliding doors on one of them.
It's a little more delicate than a train designed for a toddler, but it's sturdy enough for an older child. This one is going to a little boy in Vancouver.
I also picked up a couple wooden cars for $2 a piece. These will be put to good use in a classroom.