How much would you think a long distant partner should take online?

I consider online dating best chance at relationships unless I can move country but I am often non online because money and bad internet. If you had long distant relationship with online partner, how much responsing would you expect and how much time spent? If not being online is bad, is there another way to talk long distance that is less money? I don't use phone but a computer so calling is also not working and to email social media or dating site internet is needed.
How much would you think a long distant partner should take online?
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