Moodle is open source and free to download as is the entire LAMP stack needed to run it. If you wish the only costs of running a Moodle site is the rental cost of a server. If you are prepared to put in the time to set up your own site, it can be done for around $5 a month. With a busy schedule you may be looking for someone to do the work for you. MoodleCloud fees look very reasonable.
Is there any plan for the small coaching center/institute?
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