Smart Eload 300 & Red Mobile Products

I was gladly surprised that Loadxtreme has smart eload 300 and Red Mobile products.

Someone approached asking to be loaded 300 worth of Smart eload to his cellphone. At first, I was faced with the problem since I only know of 115, 60 and 30 php worth of eload. What combination of these 3 would be closest to 300?

Then, I thought of loading via internet. And in the drop down box of products I was surprised to notice S300x and red mobile prepaid products.