$XEON is in euros and therefore a very good alternative for overnight money if you live in the eurozone. $PR1H is in USD and therefore unsuitable unless you want to speculate on currency differences. I don't know what you mean by "cheap". If it's the unit price: that's not a criterion for any security, it only depends on the price performance.
@ScorpionfromBW You're right in principle, but if the two were identical and only differed in the TER, the €30 would also be a waste. But @randomdude has already proved me wrong.
@financial_ninja_723 It is not true that $PR1H is unsuitable. It is hedged. They come out about the same, as you can see from the past performance (1M, YTD, 1Y...), but $XEON is slightly ahead.