If you don't have to sell it right now you might consider hanging on to it for a little while. People aren't really buying much right now unless the price is rock bottom because of all that's going on with this outbreak and the economy. That intake will sell for $300 and more every day of the week normally. I know I wouldn't sell the one I have for only $300
I don't think I'd drop the price right now just because you're not getting much action on it. I think that's a sign of the current economy more than the value of your part. Things will come back around fairly soon.
They usually bring $200- $300. Personably I don’t need one bad enough to ever pay 3. Last one I bought was for $175.
You should post it in the "parts for sale" section. Doesn't belong in the "bench" now that you are offering it for sale.
Sandblasted with no broken bolts or threads I would not take less than 300. I wouldn't expect to sell it anytime soon until the CV has run it's course.