Suggestion on a dilemma

So…I am kind of in a situation and would like to seek advice here. A month ago I picked up the 42083 and 42056 set from local Facebook market place for $1000 cad. Both boxes have been opened but bags are sealed. They are authentic sets. Condition: 42056 - only open box - bags are sealed with maybe some scratches on box. Nothing I would complain about for the price I got the package for. 42083 - open box - bags are sealed with some scratches on the box, again, nothing I would complain. Upon...