Confusing Calculations! Doesn’t make Sense! – FOREX.com Review

The calculation is very confusing! The minimum to buy is 1,000 but it doesn’t matter if you buy 1,000 or 4,000 you STILL gain the same amount in DOLLARS ex. $1.63, $3.22, $2.18! My biggest question is, how is the quantity cumulated when buying (how much is the buy)? example I put buy 2000 and the cost of it is .75809.” For AUD/USD. So that will accumulate to 1516.18 BUT the Margin is $45 and change. So I don’t understand how much money is being used when buying. I feel like I am just guessing of how much I can bid bc the calculation is not making much sense I’m sure there is a formula to this. So what is it???!
Review by Nice102505 on FOREX.com.