let's take a poll, I would not buy a new board because of a sampler. Or lets say I wouldn't pay extra for one and probably would not use it except if It was easy to use I would sample my dogs barking and play with that.
How many would buy a new arranger because it included a sampler?
If you could buy the same board with or without the sampler would you pay 5 or 6 hundred (?) bucks more for a sampler?