You don't need another Prestige Droid, you just need to spend + 10k crystals to get the Prestige Droid ready for another Prestige upgrade immediately, and so on.
Why do you think they created this level at 10x the normal cost in crystals? Patience is not a virtue for everyone.
At least you can upgrade units to Prestige in the Lab without the 10x crystals cost - probably a mistake from the Devs, when they realized they forgot to add the 10x cost for troop upgrades, it was too late.
SWC Windows survivor.
Imperial HQ 11 & Rebel HQ 11 on vacation. Currently in "Giveandgettroops" (Level 50 Imperial Squad) and "SevenOfNine2" Level 50 Rebel Squad -- training squads, everyone is welcome!