While considering a price adjustment on a high-value item I'm selling, I went to their fee calculator to explore some other price points. I was mystified to see not only the fee I expected of ~$55, but a 'New Fee' of $123. Thinking I'd made a mistake, I explored further, and noticed that as of April 16, casual sellers who don't have an eBay 'store' will be charged 10% of their final sale value in fees. Store owners will keep the existing fee schedule, but it will cost them a monthly fee beginning at $16/mo. Add in the 3% Paypal fee and they're taking a very large cut. For many categories of goods, this represents a doubling of current fees.
I only discovered this by accident; I listed the item yesterday and there wasn't any warning about an impending fee increase. They haven't sent any notifications by email or to my eBay mailbox either; seems this is being rolled out quietly.
Now I'm lowering my price in search of a quicker sale rather than risk paying an extra $70.
EDIT: I've just realized that this fee increase begins right after Tax Day in the US - when many people list and purchase items because it's time to pay taxes or receive a tax refund. I've always defended moderate eBay fees because they provide relatively smooth access to a big marketplace, but not any more - this is pretty sleazy.