It's admittedly been awhile since I priced redwood, but when I did my own deck a couple of years ago, Ipe was the same price as redwood. This is a tropical hardwood (and there are some other names for it which are typically similar breeds) which has become increasingly popular in this area for those preferring real wood to a composite.
The problem with redwood nowadays is that most of it is so soft and open grain (as opposed to the old days of heartwood with harder, tight grain) that, IMO, it's not nearly worth the price.
The Ipe will last infinitely longer, I believe is now coming in sizes you can use or mill into railing, etc., but is hard as a rock so can be hard on blades, etc. You'll need to pre-drill for all your screws and as Inspector D says, use all stainless.
It is just as tough to keep up the nice wood color as redwood, but I just let mine grey out, which I like just fine, and the maintenance is zero.
You may want to check to see if it sustainably harvested, this has been one criticism of it but no worse, IMO, than using redwood.