When deploying your Azure based VM’s the most common VM Size is D13 with 8 cores and 56 GB RAM. This VM costs approx. 924 USD per month according to the pricing calculator.
Microsoft have made some new sizes available :
The new size is named D13 V2 Promo, and will cost 749 USD. If you have MSDN the costs are further reduced to 429 USD/Month
You cannot select this size in LCS, so you must log into your azure portal after deploying, and change the size there.