A brand new R3 is $4990 MSRP but most dealers also whack new buyers with a delivery/freight fee, doc fees and tax. Most of us are lucky to be out the door for under $5500.
$4000 is a steal for a slightly used R3 with no damage.
$3000 is a no-brainer
I bought mine a few days ago for $3k with 67 miles - (not dropped, pristine condition). There's sellers here trying to sell their bikes for WAY too much (4k) but here I can buy a brand new R3 for 3990 (2015) before fees out the door.
I have 2500 miles on mine and I wouldn't even consider letting it go as is for less than $4500.
If I was extremely motivated, I'd pull off all of my mods and even then, I don't think I'd go below $3900.
You people outside of CA is lucky as ****! You can't find a **** used R3 for anything less than 4.5-5k (used). I got really lucky and got mine for $3.8k because the young man lived in the Central Coast and everyone there drives LOL.