I sold mine years ago and pretty much broke even on them from what I remember. As they don't make them anymore, if yours are in good nick you should get somewhere between £600 to £800 for the pair and maybe more if you've got the dustcovers and some decent carts. Dunno about the Technics mixer, depends on the model but they're not considered super desirable as far as I'm aware (Pioneer were always the mixers for me).