Hi Luce.
This is only if you don’t want to use a VPS at all and run the bots on your personal PC, open 24/7.
But if you use VPS, in addition to your challenge account on which you run the top 3 performers, you also run the FTMO trial account with all 8 robots.
At least that’s what I do. The VPS costs me 8 euros per month, which seems very ok to me.