Honda Dirt Bike Exhaust & Carb

These were left by the previous owner of my new house. I don't ride bikes so I have no use for them and would like to sell them for a reasonable price.

Did a little research but perhaps any MX buffs out there can give me more info.

1) Spark Arrestor Exhaust set up for a 2004 Honda CR 250. Model# HMKSCA1. Header, midpipe and muffler. The box it came is shows it was bought in 2004 from Duback Racing, their part#2019.

2) KEIHIN carb. Probably from the same bike. I also have fuel mix screw and other random bits.

3) Some kind of stainless steel fuel tube with flange.

I was thinking around $400 for the exhaust but make me an offer on these. I know the exhausts sell for like $600-$1000 new. Just want to get them out of my garage.