Tube Tester Option


https://www.ebay.com/itm/233953776139?chn=ps&mkevt=1&mkcid=28

With all the money I "gamble" on audio, maybe I should just buy this and try it.  
128x128jbhiller
@gndrbob,  I wouldn't think Atmasphere would have tried this product as it's clearly for hobbyist use.  I would think he has a legitimate Hickok or something commercial and substantial.  

I just need something to test my 9 pin preamp tubes.  I have a ton of 12au7 variants that I want to sell as I no longer need them.  I'd like to be able to make an accurate representation about their condition.  And yes, I realize that absent something like TubeZilla at Upscale, nothing is guaranteed accurate and calibrated. 
@jbhiller ,
I know, but he would be the best person to ask if it is worth buying.
Why spend $130 when another $100 or so would buy something that can do the job without question.
B