Technically it's also available on German and UK amazon stores, but they only ship books, DVDs, CDs etc. abroad. Same goes for the US amazon. Splenda (or sucralose) has been approved by the European Union (Poland is in the EU), you can check it out here:
SPLENDAŽ Sucralose | Welcome
In Poland sucralose is used in prepared food, like juices, protein bars, shakes and so on. It's just not available as a sweetner. From what I know packages sent from one person from the US to another in Poland don't go through customs unless their declared value is higher than some amount in euro (like 40 or 50 euro I guess).
It's no scam on my side
