I say it depends. You mentioned a feather tickler. I own two different ones. One is of a shoddy quality, the feather is barely glued in with regular glue and has clumps of glue in it. The feather's "stick" has no handle, is light white plastic, and has sparkles that are chipping off all over it. The other feather is made from a strong, black plastic for a handle, glued in with superglue while plastic "covers" it so it doesn't look ugly, and the feather is soft - there's even two feathers-back-to-back to make it stand up better.
So to me, yeah, there's a huge difference in quality that a picture wouldn't really show, but a review would.
But for something like a "penis feather boa", no, I'd say I don't really give a crap.
A deck of cards I would. Since there are tons of different ways the cards could go. EF only shows a picture of a couple. I bought a deck of cards from another site, and it showed a gorgeous asian on the front, but half of the girls were spread in really awkward positions, from the 90s, and most werent Asian. So those things really could use a review.
So it depends on the item. And the review. A review that says "lol. These cards are fun to play with!" Not so useful, but if it describes the cards and what they look like as well as other aspects, it's more useful.