Has anyone who is using C&C noticed an impact on sales?

A week or so ago I was transitioning a number of items from one account to another--and decided to try an experiment.

i kept the original listings with explicit postage, and increased the prices by ~10%.

And I set up the listings on my second account with C&C at the original price.

After 3 days, 90% of sales were on the old listings, even though they were more expensive.

So I removed C&C on the new listings and sales immediately shifted from the old account to the new one.

I suspect that some buyers see C&C on an item in the search listing and assume that's the only postage option available.

Ebay needs to change it to "*Optional* Click and Collect"!

i know when I first saw it, I assumed it would offer a cheaper postage option, but since it doesn't, as a buyer I'm not interested. And as a seller it just seems like one more thin that can go wrong.