Cultures in Core missing?

Hi,

Why the GetCultures method is missing in Core?

var cul = CultureInfo.GetCultures(CultureTypes.AllCultures);

Is the "en-PH" currency not supported in Core?

var currentPrice = String.Format(CultureInfo.GetCultureInfo("en-PH"), "{0:c}", ((TblProduct)e.ListItem).Price);

var dealPrice = (textBoxInput.Replace("₱", String.Empty).Replace("?", String.Empty).Replace(",", String.Empty));string toBeConvertedToDecimal = dealPrice;decimal newDealPrice = Convert.ToDecimal(toBeConvertedToDecimal); //<<----ERROR