Domains that are using that phrase: oilfed.fun fun ns1.oilfed.fun 6 - not likely oilfed.online online ns1.oilfed.online 6 - not likely
I believe these are parked domains wish makes it hard to sell your domain.
there is Broad 5400 Monthly Searches at $1.10
so i would value this domain between $100 and $250 for not being a very popular keyword phrase and searched,but there is some interesting google data that may increases the domain value overtime.