Well, in all honesty, there is no way to really tell what someone would be willing to pay for a set of drums -ANY set of drums, but I'll try and explain why I think this kit is a cut above the average EBay kit:
This one is a matched B/O badge kit from '69-70 era -meaning that these drums were made together and stayed together
>3-ply shells withOUT the wrap tucked into the seam
>natural maple interiors -probably the most desirable incarnation of all the 3-ply variants
The hardware is also original era-correct hardware -the most desirable flat base stands, double tom mount, Atlas hi-hat, SpeedKing bass drum pedal, Atlas snare stand -ALL of it just like it was found in the Mummy's tomb!
Then, there's the Avedis Zildjian cymbal pack -a complete ensemble -likely ear-matched by the former owner (if he was a musician, as mentioned)
Then there's the cases -which not only are handy for storage of the drums, but are also collectible and especially collectible because they are part of this ensemble of every era-correct component and sound that was of that time.
So...
To a collector, it's incredible
To a player, it's incredible
To someone who likes history, it's incredible
To someone who likes pretty things, it's incredible!Party
I assure you, this is NOT the average EBay silver sparkle drum kit. Again, the COMPLETENESS of this ensemble is everything.
If it was just a few nice vintage silver sparkle drums in excellent condition, it would sell for 1200-1500, but this is a whole other deal because it is an entire family tree of Ludwig drums and hardware and the "right" cymbals....on and on.
Mind you, this is strictly based upon what I see in the pictures. If there is a problem that I can't see, then I would have to amend my estimation. But, it honestly would not surprise me if that kit goes for a lot of moolah!