Is there an overt contradiction between 'If you would like to become a member of ELM, please fill out the enclosed membership form and send it back at your earliest convenience.' and 'Membership of the ELM costs $20 per year.'
If you would like to become a member of ELM, please fill out the enclosed membership form and send it back at your earliest convenience.###Membership of the ELM costs $20 per year.