How can you have decent trading volume if you aren't listed yet? So the only way to be listed is pay??
They have been listed, but only on Exmarkets exchange, which is not Philippines local.
Such token as Howdoo has strong volume there, I can't say it about ROKS yet. Is it free to be listed on Exmarkets?
Yes, Exmarkets exchange is not one of majors but it's no that bad and has quite high trading volume.