These autoclaves are designed for ease of use. And with a stainless steel chamber, you will not have to worry about rust. Often autoclaves fail due to a build up of algae that forms in the water reservoir. These units allow you easy access to the reservoir to be able to clean it and also to monitor the condition of your water.
18L With straight forward interface is $3,800 plus shipping. That is a 10" chamber 18" deep with a 3 year warranty.