What is the limit on bitFlyer purchases?

Could you please elaborate on the purchasing limits imposed by bitFlyer? As a cryptocurrency investor, it's crucial for me to understand the maximum amount I can buy or sell on the platform to ensure efficient and seamless transactions. Are these limits static or do they vary based on user verification levels or other factors? Additionally, are there any specific conditions or procedures I need to follow to increase my purchasing limits, if any? Your clarification on this matter would be greatly appreciated.