That really depends. Sometimes, things can be pretty generic or the main site can be badly organized. In that case, I find that a folder in my bookmarks bar with links can be a lot faster. Even without using the bookmark, autocomplete in the bookmarks bar can be faster than a search engine.

In other cases, it can be a pain to get specific enough. If I want the English version of Chihayafuru Volume 1, but on Bookwalker, not Kindle/Comixology? How much typing am I going to have to do? Note that if I'm not specific enough, I'll get a bilingual edition meant for Japanese people to learn English as the first result. It's an imported physical book and not a digital one, either.