My $0.02 is that the OP will be lucky to find a right new home for it.
It is possible someone will give you an ok amount for it if you are really, really lucky. For such a fish, an LFS here in the US would ask ~$100-$150 or more, if the fish is not causing problems with housing. But then LFSs usually don't care or don't have to care where the fish goes into. Someone may stuff it in a 55 gal or 100 gal.