The CZ20 is out of production but they can still be had.Check this board,Fisherforum,orFisherCZforum,or Ebay.This is not a mid priced detector.It's pricey,used runs 500/700 bucks,New 850/1100 bucks.The 1280x is a midpriced detector as the Whites PI or beachhunter ID.Right now on ebay is an older Whites surfmaster2 with a bluemax coil for 235.00 buy it now that would be a great starter machine.
The WhitesPI is a great water machine,It has no discrimination,which may not be best for a starter.The beachhunter ID would probably better suit you.Good luck! Hermit (update,just checked that ebay auction #9701158057,someone made a bid,so now there is no buy it now option.The biding is at 200,I bet it could be had for 250,auction ends in a few hours,check it out!)By the way,this is not my auction,just happened to see this one.)