Search eBay for similar, watch what sells compared to the ones too high that won't sell.
All the hardware looks to be in Excellent condition... sadly it's prime value was 3-4 years ago... should have sold when project was done.... 3 yrs ago you had a saleable $4000 package minimal.
The full case Ronin is a Ronin M, has limited use without the dedicated mount fastened to the S1000. The saught after model is the Ronin MX for M600pro and S1000. A clean, excellent conditioned RoninMX goes normally for about $600-$800 in nice case; the M model would have much lower value unless you connect with someone looking for a M model... I often see them on eBay for about $300 in case. The extra Zenmuse gimbal again, no value unless you connect with a Owner needing it.
The S1000 is stock, excellent condition but based on the A2 electronics. Newer S1000 builds were based on A3 or A3 Pro and Lightbridge 2. The A2 in current day is not saught unless again you connect with a Owner needing spare S1000. Used A2 components probably $300-400 range... compared to used A3 or A3 Pro still draws near $1000+.
I have a modified S1000, A3Pro LB2 with different motors and 18" props and RoninMX vs stock 15" proped motors... and it's worth is much more than I could possibly to Sell... based on market I've watched, the Stock S1000 would be doing good to bring $500. If it was a A3 LB2 setup, I'd offer in the $1500-2500 range for package... with batteries, charger, etc.
If you can sell the other components separately, you'll get your main residual value.
Good Luck!