The Modern Day Tiles Resource Pack is well worth the price given the rights attached to purchasing the set. It comes with sheets for A2 (although nearly empty), A3, A4, A5, B, C, and D. There are two sheets for doors, various styles of dumpsters because why not, numerous traffic signals, and a Steam exclusive background if you're into that kind of thing.
What is not as nice about the pack is that it's fairly limited in what you can build with it, but that's okay. I strongly recommend editing the stylesheet with your other tiles. The Futuristic Tiles Resouce Pack and the DS+ Resource Pack contain many assets that are invaluable for creating a richer environment than what you can accomplish with just the pack. Due to the lack of A1 and E sheets and because the D, A2, and A3 sheets are not completely filled out (A2 being nearly empty), you can squeeze far more into your tilesets to create a more complete city. This set isn't necessarily complete on its own, but it's a great resource if you're looking for more contemporary-looking assets.