Parodia leninghausii - Golden Ball Cactus
Pretty yellow spines grow on vertical ridges up the sides of this cactus. Grows into a tall column, but stays smaller if you keep it in a smaller pot. After a few years they can put out magnificent huge yellow flowers.
Your plant will be similar to the one in the photos.
Ships in a plastic pot with soil.
Vivid Root Mineral Mix or similar
Part sun, protect from hot afternoon sun
Let dry between watering, water deeply