And at the end of the day, this is why IMO you shouldn't have to justify your pricing to anyone who isn't already a-or ready to commit to becoming a paying customer. It's their feedback that ultimately matters to your ability to pay rent and keep this service going.
Keep doing what you're doing-as a part-time community manager who operates in the Crypto space (a community that has almost thoroughly and entirely embraced Telegram), this kind of product I can forsee will go a great way towards creating community/customer support portals for developers and enthusiasts of coin n.