I can see many people out there offering rather very cheap directory submissions services and the price is so low and that i wonder whether such offers are indeed manual submission or automatic submissions using auto submitters, as i feel that is the only way to get some profit with such low price.

Why don't you ask them directly if they do them manually or if they use an automated software.

I would prefer submitting manually. Surely you can dedicate atleast 3 to 5 submission daily

Be the better judge of selecting which directories to submit to, that always work out

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As said above i prefer manual submission, its quite time consuming but its more accurate.

That's a very genuine question and as a manual directory submitter I would say I do make profit even after such low price

Of course there are some people who are offering unbelievable rates and I believe they can do so ONLY because they are doing automated submissions.