How to Sell My Basilisk War Droid Mount

So I got my bonus at work yesterday, and I always treat myself with a hypercrate and I got lucky enough to pull a Basilisk War Droid mount. I see from the fleet that these go for 10 billion credits. My question is how in the verse to I sell this to someone for more credits that a person can carry? I cannot figure out how to make the transaction work in my head. I see all the time folks selling stuff for billions of credits. How does that work?