Is it cheaper to apply for a Muay Thai visa instead of a language visa while staying in Thailand temporarily?

The user is considering applying for a 3-month ED visa after a border run but is wary of costs since they only intend to stay until the end of July. They are weighing the option of pursuing Muay Thai training instead of language learning to potentially save on visa expenses. Comments suggest verifying school charges for activities, mention a lack of active Muay Thai visa options currently, and recommend possibly extending a 60-day tourist visa instead.