How much is Echelon monthly membership?

Could you please elaborate on the pricing structure for Echelon's monthly membership? I'm interested in understanding the cost associated with becoming a monthly member, as I'm considering joining the community. I'm also curious if there are any additional benefits or incentives offered for monthly subscriptions that may differentiate it from other subscription models. Knowing this information will help me make an informed decision about whether Echelon's monthly membership is a suitable option for me. Thank you for your assistance in clarifying this matter.