Sure. It's desirable. What wouldn't cost if it weren't dense? For example, what do you think a single family house with an acre of land would cost within walkin

Sure. It's desirable. What wouldn't cost if it weren't dense? For example, what do you think a single family house with an acre of land would cost within walking distance of Central Park and the Public Library? A bit more than the same house on a rural road 2 hours from that spot. It's all about location and desirability. People can afford an apartment since you can fit a lot more of them in that acre, but few people can afford that house.