Your data may be full of noise with people coming expressly to check out your new fangled feature. This is especially true if you've been getting press about it.
Personally, I'd interview the people who DID buy. Ask those who used it why they used it (and what they thought of it), and those who didn't why they didn't.
If the net effect is still positive for your client, then I don't see what the problem is. Maybe even just give it some time to see if the situation changes once the buzz has stopped.
Your data may be full of noise with people coming expressly to check out your new fangled feature. This is especially true if you've been getting press about it.
Personally, I'd interview the people who DID buy. Ask those who used it why they used it (and what they thought of it), and those who didn't why they didn't.
If the net effect is still positive for your client, then I don't see what the problem is. Maybe even just give it some time to see if the situation changes once the buzz has stopped.