I've always wondered this. I assume it's because it causes at least a 10x increase in server load by changing the bid and reload dynamics, and with so many auct

I've always wondered this. I assume it's because it causes at least a 10x increase in server load by changing the bid and reload dynamics, and with so many auctions going on at once it would have a material effect on their systems. So instead you are supposed to use the 'reserve' feature and not DDoS them. Also, I think they found most people really don't want to spend all day sitting in front of a screen trying to buy something. 'Buy It Now' was a really big deal for eBay, it makes up an increasingly large percentage of their revenue. [1] [1] - https://assets.bwbx.io/images/users/iqjWHBFdfxIU/i1sfM8mxJpcg/v1/-1x-1.jpg https://assets.bwbx.io/images/users/iqjWHBFdfxIU/i1sfM8mxJpc...