If I understand your question, you are referring to the spread as a cost which must be recouped before your trade can show a net profit, and you are asking what that cost is – in dollar terms – for various size positions.

One pip is worth 0.10 USD per micro-lot (1,000 units), or 1 USD per mini-lot (10,000 units), or 10 USD per standard lot (100,000 units).

I will assume the spread is 0.6 pips, as you stated in your post.

•If your account currency is USD, then we can calculate the dollar-cost you are asking for, as follows:

dollar-cost per micro-lot = 0.10 USD/pip x 0.6 pip = 0.06 USD

dollar-cost per mini-lot = 1 USD/pip x 0.6 pip = 0.60 USD

dollar-cost per standard lot = 10 USD/pip x 0.6 pip = 6 USD

•If your account currency is not USD, then the pip-values we used above will have to be converted into your account currency. So, for example, if your account currency is AUD, then we get pip-values in AUD by dividing the USD pip-values by the current price of AUD/USD.

Let’s say the current price of AUD/USD is 0.70836

Then, one pip is worth 0.10 USD / 0.70836 = 0.14117 AUD per micro-lot, or 1.4117 AUD per mini-lot,
or 14.117 AUD per standard lot.

Thanks @ontario and @Clint I understand now. I think i i understood it correctly to begin with but CMC Markets used different terminology when i called them.

One last question - so with the AxiTrader example
dollar-cost per micro-lot = 0.10 USD/pip x 0.6 pip = 0.06 USD
dollar-cost per mini-lot = 1 USD/pip x 0.6 pip = 0.60 USD
dollar-cost per standard lot = 10 USD/pip x 0.6 pip = 6 USD

To include commission i simply add $0.07, $0.70, $7 to the $0.06, $0.60, $6
if the cost is $7 for round trip? or should i be adding $3.50 for one side?

Yup your calculations look legit. Don’t be misguided with micro lots account and other BS. Leverage, absolute nominal lot amount and the name of the base currency are the only parameters needed to calculate spread, remember that.