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Yes, you can also pay with Steem, assuming you can have enough RC to do the transfer.

Is RC related to transfer amount or per transaction only?

Per transaction only, there is no relation to transfer amount. But different operations in a transaction can cost different amounts (for example, voting is cheaper than posting or commenting).

Cheers mate - sounds doable - need to grab my laptop to get started, never bought delegation yet - would be a first lol

Thanks for the swift deal @blocktrades - good work!

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