from what i've seen,
most of the registered names in this niche` are parked and listed for sale.
the forex trend had reached it's peak a couple of years ago, right before the crypto craze, which is where all the sucker money is going now.
your name is about the best pairing, at the price listed,
and if nobody is willing to bid higher than $500 over the years, then.....
BTW: what's the traffic stats on the domain, are you getting any visitors/ clicks, etc.
imo....