How much does Bubble membership cost?

Could you kindly elaborate on the pricing structure for Bubble membership? I'm interested in understanding the cost involved and whether there are any tiers or packages available. Additionally, do the membership fees vary depending on the duration of subscription or are there any discounts for longer-term commitments? It would also be helpful to know if there are any hidden costs or additional fees that I should be aware of. Thank you for your assistance in clarifying this matter.