Today I'm also drooling just a little over Skeleton Key Games's 2e Adventure Tiles: Dungeon Encounter 01 They're a good-quality easy-to-use set (no fiddly layers) - good value for $3.
The art is clear, textured, detailed with just a hint of a tribal magic design and yet generic enough to resemble a part of any dungeon setting. Since the 80s I've always preferred floor plans where the grid is actually part of the flagstone design - it always made the environment more "immersive" visually speaking - which is exactly what we have here. The 6-inch tiles, with wide margins, should print well on any printer without any need for rescaling.
The individual tile layout is specific -usually an entrance on one side and an open area on two sides- so that a large room area is always created with four tiles- but tessellations mean that many compelling layouts are possible. The inclusion of stairs and transitions between levels is a nice touch. Perfect as an encounter environment or "just-passing-through" on your dungeon crawl.
Nice work. Very professional. Good value.