Depends, sportster are available a dime a dozen, I paid 3550 for mine, had new tires and brake pads and 24K miles
it is carb and I'm no expert in adjusting it, but the web helps a lot.
you can find a sportster on the low 3K if you have time and cash on hand.
I sold my KLR in one week and had to buy another bike in a hurry (I don't have a car or any other transport) so I looked for bikes for about one week while waiting on the KLR buyer to pick up the bike, he got the KLR on Monday, and Tuesday I got the harley.
Good Luck on your search...
My choices when I decided to replace the KLR were, Sportster, BMW airhead, triumph boneville, kawa W650, honda shadow 750RS the harley was the cheapest one