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Having Premium is a good investment. But it undoubtedly requires good planning for many, because it is not only about the monthly fee but also about justifying the service and maintaining it over time, and for that you have to budget for it

I agree with you. One shouldn't start an investment without proper planning and budgeting especially when it has to do with a long term investment.
Your income needs to be able to sustain the subscription.

It's good to subscribe to Leo premium but one mustn't run into cost while doing so. The premium has come to stay so one can always subscribe any time.

I understand your plight and point and need to to consider the benefits of what you'll get in return for the Leo-Premium, although I'll say the premium has loads of features that'll make microblogging experience more enjoyable.