I am looking for these 3 boxes preferably mint. Any opinions or comments are welcome. I am new to this hobby. Thank you.

Welcome to the site!

You have picked 3 of the top dollar boxes - these fetch a good buck - a minty discolite can get $1200 or so, a 777 $600 - $800 , tec(sonic) super jumbo $550 - $800 ..

If you`ve got almost three grand to spend you should have no prob finding them..