Ok, I think I found a competitive solution:
Same fund, but the “R” share class LU2572481948. I first thought “R” is for retirement funds and did not consider it (probably because of US mutual funds). It is not.
I placed an order for 257248194 IMGP - DBI MANAGED FUTURES “R” (USD) ACC on IBKR for 200 USD. It accepted. Maybe because IBKR uses an omnibus account? Results should be available by the end of this week.
The “R” class has only a maximum of 0.80% management fees. Redemption fees are 1.00% for all share classes.