Cheapest way to sell shares

I am looking for the cheapest way of selling shares I bought online through sharewatch a few years ago.

Don't really want to do any further trading, it would be just a one off sale.

Any advice on the cheapest way to go about this would be greatly appreciated.

Thanks.

Where are the shares now? Do you have the certs or did you move to FXCM/Saxo over time?

I have the share cert, transferred them over when sharewatch closed the ac.

Looking for advice re: selling Roadstone shares, certs which I hold, received as part salary.

Need tax advice? Thanks in advance for help
Browtal