I believe that ARC will still retrofit the LS-3 with remote, but it used to be $600, and it is surely more now.
If you really need a remote, you're not going to get much in the way of sound quality at your budget. Remote volume control compromises the sound of the preamp, and inexpensive preamps with remotes are severely compromised.
If you really need a remote, you're not going to get much in the way of sound quality at your budget. Remote volume control compromises the sound of the preamp, and inexpensive preamps with remotes are severely compromised.