If you love D&D and 4E, spend your spare $10 on this rather than on the Dungeons & Dragons Character Record Sheets: Roleplaying Game Character Sheets, 4th Edition. You'll find these tiles much more useful and a much better value. And unlike the latter, this one actually underexaggerates its page count (says "1", but there are 6 two-sided tile sheets with over 40 tiles, large and small). Although "Halls of the Giant Kings" begins a new Dungeon Tiles product line, you won't find it much different than the previous "DT" line of tiles. Just a new new style cover, but the tiles have the same weight and texture as previous releases.
Although, as the title indicates, the illustrations of many of the tiles suggest scenarios for halls of, um, giant kings, a good number of them are very generic stone floors, objects, rubble, glyphs and so on. This makes DU1 suitable for most simple dungeon crawls, something missing from many recent DT releases now that DT1 is long out of print. In short: great value for the money.