I have a rough idea overall, (it's not as much as you'd think) but I mainly horse trade stuff either on the grey market or melt and CCU stuff on the RSI site for sale on the grey market later. The most I've given Ci¬G directly in the last 6 months is $5...personally, from what I paid for here and there, I generally sell for a small profit back to the grey market...hence why my hangar list changes so often. It's a bit like a side hobby for me, the horse trading bit. Speculate on what ships may be soon to rise in price or go to flyable from concept..then sell the Jpegs or attractive CCU's for a profit at some point .There's a couple of ships I won't sell, namely the Caterpillar and Cutlass...I like them. The Cutlass was my original pledge way back in 2015 and also the ship package I bought back in with, the Cat is just a ship I love.
I've obviously spent over a grand USD (a very small part of the proceeds from a 1930's Rudge I restored and sold)...since the concierge status is from Ci¬G...and you can't get it just from horse trading ships on the grey market. Saying that, if I decided to flog all my stuff on the grey market tomorrow...I stand to make a bit more than I spent. Usual risks involved of course since I could well end up out of pocket or lose it all should Chris Roberts burger off to some non extradition island with my cash
I also have $500 in store credit on the RSI site...from the explorer package I sold that I credited back to my account... as well as a 20% off voucher on any future purchase awarded for a years Imperator subscription (paid for with store credit) plus a few bucks that I had lying around from melts here and there. That'll either buy a new ship to add without spending any more ready cash out of my pocket...the Mole miner comes to mind although I suspect Ci¬G will make that a warbond only sale for new cash only, hence why they're holding it back until after the expo... or I'll use the credit to CCU something else that might be infinitely more saleable on the grey market, you also don't pay VAT on stuff bought with store credit... the horse trading can be more fun than playing Star Citizen a good part of the time.
There's lots of us do it...look on it as a kind of a Star Citizen mini game if you will