Can someone explain the difference between in 1,50 euros and 15.00 euros. What is the different between having a comma and a full stop?
The first number is one and a half euro. The second is fifteen euro. The comma is sometimes used in lieu of a decimal point. The comma is not used to reflect incremental thousands (eg 1,000,000 for a million). The strike-through might be the dumbest thing ever written. Witness the number of commas in the flyers on the front of real estate places - - there's enough commas to give you an acute case of the barfs.
In continental Europe the decimal separator is a comma, not a point. (Two partial exceptions: Liechtenstein and Switzerland use points for money, but commas for everything else) Countries with use the point as the decimal separator often use the comma to make three digit groups (e.g. 134,450.45), countries which use the comma as separator often use points for this (e.g. 134.450,45). If texts are translated between languages with different separators it is a bit hit and miss which separators will be used. This is even worse if the numbers in the text text are automatically generated or processed (e.g. by a data bank or a program). Hilarity ensues.
I'd say that the first is one and a half Euro as written in most European countries. The second is 15 Euro as written in the US. In Europe, 15.00 is probably gibberish, as they would recognise 15,00 as 15 Euro and no cent and 15.00 as missing a 0 for 15.000 or 15 thousand. And, according to the European Bank, which issues it, the official plural of Euro is "Euro" (no s).
and a bit of common sense. If the sign says 15,00 or 15.00 for lunch, it's a safe bet they mean it's €15, not 15 thousand euros. You may also see 1,5 - that would be one and a half. Sometimes the zero gets left off of cents. After 2 or 3 days, you probably won't even notice the punctuation.