Site Selling Question. Frustration of Selling. Flippa still good?

I'm a builder that flips pretty consistent.

I have a new website for sale that's got 2013 in the domain, which has earned $584 since around February 15th ( over $500 of that was earned in March-April )

It has to be updated regularly to earn but if you can use something to cover a car payment, it's well worth it.

I have a few questions after attempting a sale & having a few inquiries. My knowledge is ancient & requires updates. I've been focused on other things more. Just hoping to find a few good ideas on Warrior.

1) Earning $584 in about 70 days, would 2.5x the total revenue be a fair price to ask? $1460 to be exact

2) I was going to list on Flippa but it looks like nothing generally sells there anymore for a fair price. Is it any longer a resource? I don't want to risk $29-$39 trying to sell to a bunch of low-ballers.

3) Is there any new marketplaces to find buyers that are looking / buying quality custom sites from US builders? I make mine from scratch with a design / program team.

Thanks
- CB