DislikedTrading via mt4 is more expensive that via lmax's web interface.
They also charge extra for trading via api.
This is what I hate about lmax: thier inconsitent (stupid) policy. It does not make sense to me to tax different trading venues differently. They seem to not to want clients, but, otoh, they desperately need clients..Ignored
There is no charge to trade via API with LMAX, but you need to have an account of a certain size.
And trading on the LMAX proprietary platform is cheaper than trading on MT4, as LMAX are an STP broker and use PrimeXM's bridge to hook up the MT4 platform to the liquidity in the LMAX exchange. There is an extra cost for this, that LMAX is passing on to clients.