Two things I've noticed (if mentioned previously I'm sorry!) I did see Leto said something about nectar, but this is different (I think) but I put some nectar-racks in my basement(duh lol) using the Shift+Control+click, made it buyable, put (!!!) in it and bought a few. I aged it for a few weeks, Then I sold it at the consignment Store, it's like over $80,000 simoleans at first but I sold it and I got over $300,000 for it. I'm posting a screenshot for proof.
Another thing I noticed, you can buy paintings at the consignment store for $5 dollars. They don't appreciate so what's the point? Well, the game I'm playing right now I have aging ON (gasp!!) and when the artist dies, it jumps in value, than consign it, and if you have the suave seller it sells for more! For example, I bought a painting that Gavin Ly painted for $7. He just died so now:
and since I have the suave seller LTHR, it will sell for over $1,000! So for $7 I now get over $993 profit!
EDIT: SWEET! I wasn't sure how much more, so I had my female do it (cause my man has a ton of stuff consigned and I didn't want to cancel) and I got $1824 in profit! Yeehaw!