It's a nice looking car, very well put together. However, they have priced this as if it were original and correct, which it is not.
Now this will sound like I'm nit-picking but...
It's an Austin-Cooper, so in 1965 it should be a 998cc
This engine is a 1275. The engine also has a much later cylinder head from (probably from a Midget) as it has "smog ports".
That under-hood blower for the ventilation system doesn't look right for 1965. There were a lot of Mini variations but I've never seen one from the mid-1960s with that fan.
The coil is a good Bosch Blue, but for a restoration of this level I would have expected a Lucas coil.
The starter solenoid looks to be a Ford part, not Lucas.
The interior looks spotless, but there are some minor points I'm not sure about. The dash rails MIGHT need to be covered in black vinyl to be correct. The interior door handle levers should be the "spoon" type, not the aftermarket chromed pipes shown. The right-hand door lock/latch has week springs as evidence by the "droopy handle" both inside and out.
The seat belts would probably have been Britax or Kangol. The belts in the photo are a later design (probably safer, but not correct).
There are a couple of other VERY minor things I noticed but bringing them up WOULD be nit-picking.
I think this is a beautiful car, though not original. I think for $16k it should be original. That said, what's it worth? I think it should be between $12-14k.