Steam Guide – How to Search Games by Publisher on Steam

If you go to the search page and click "advanced search", you can also filter for games under 15$, under 20$, and over 20$, in addition to the under 5$ and under 10$ categories.

Alternatively, you can just not search anything - that will display all games - and then sort according to price, by clicking the header of the "price" column. You can click it again to toggle between ascending or descending search.

Here's a direct link to page 5 of the descending link - where 30$ games start to appear - but as games are added and prices change constantly, the page in which 30$ games appear is bound to change.

In Steam, go to the menu on the top left and look for the settings menu entry.

Within the new window that pops up, look for in-game.

You will see this:

On this screen you can define how often Steam is pinging servers when looking them up. A slightly lower value might improve your experience drastically, as mentioned on the screenshot.

However, this only works for games that utilize either the source engine or the Steamworks infrastructure for their servers. It won't work for other games.