Also, why are the eggs more expensive than the day old chicks? This really confuses me, but I'm sure there is a good reason.
Eggs from *where*.
Eggs from serious breeders, they're more expensive because you're getting much nicer (more consistant, closer to the Standard) birds than from some hatchery. It takes a whole lot of work/time/expense for the breeder to get things to that point, so it seems reasonable to expect them to get some compensation
Eggs from, like, McMurray, I think they are mainly priced to discourage you from ordering eggs while still providing it as an option for, say, teachers who want to hatch eggs in class but don't know of a local source. Also because the hatching eggs sold by a big outfit like taht are produced by subcontractors it is a nuisance to deal with unexpected time-sensitive small shipments, you know? which may factor in to the price too.
OTOH, it is not uncommon for people on BYC to offer hatching eggs for just the cost of packing and shipping. You will not likely get rare or show-winning lines that way, but frankly for most of us that doesn't matter
so it is something to consider if you just want chickens.
Have fun,
Pat, building an incubator this spring, but for my own hens' eggs, not planning on buying any. Uh, for the moment, anyhow <g>