Quality is essential in a safety gate because it is what is going to keep your stove as safe as possible. When you have a fire, surrounded by potentially flammable material, it is vital to keep that fire under control as best as possible. The best safety gates will provide the best safety from your homes surroundings, which is exactly what is needed.
Furthermore, the quality will really help the durability. If the quality is high, chances are that it won’t need replacing as much as a gate made with cheaper materials, so you will save money in the long run.