Recommendations for a vacum tube tester

@fuzztone here’s an example of an old tester in good working order and recently calibrated per the seller?  $699 plus shipping..
https://www.ebay.com/itm/394531823919?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=6qQJLq77Twi&sssrc=2349624&ssuid=2lFcSwP8SgS&var=&widget_ver=artemis&media=EMAIL

That’s a good tester for preventing your gear from becoming a “tube tester”.   Mine saved me from putting a bad rectifier in a new amp.    It was worth the money to me.   
 

Mine is similar to that, it’s an 800.   It is super easy to use and does everything I need it to.   All of my gear is tubed so it does get regular use.   

Hi Dill, For myself.

B&K make good basic used testers in your price range. Several models to consider are: 550, 607, 667, 700, 707. It most likely will need to be calibrated.

not gonna happen for that price.