Back when Ti bikes were the Next Big Thing, frames from the big makers (Litespeed, Seven, etc...) ran into the multiple thousands of dollars. A Litespeed frame still costs North of $3K, but the difference is now nobody rides them. Seriously. You used to see them all over the place. Now maybe occasionally at a triathlon, but that's it.
But a funny thing happened on the way to the carbon fiber revolution; we seem to have entered a renaissance of Ti frames. There are quite a few custom and semi-custom Ti builders, from out-of-my-price-range (Moots and Independent Fabrication come to mind) to well within my price range.
This, then, is a very brief tour of a few of the options available in the budget Titanium world.
When I bought my first Ti frame (Summer 2004), the main options seemed to be Habanero and Airborne. Habanero is still going strong, despite a website that hasn't changed appreciably in at least a decade. That alone should tell you that the word-of-mouth is good. Airborne, meanwhile, appears to be defunct. Interestingly Habanero shows up on the first page of google results for 'titanium bike frame'. A remarkable feat for a small shop, and no doubt in part thanks to Sheldon Brown's "Century Special".
The owner, Mark, is a really cool guy. Very helpful and friendly. He doesn't have a huge selection of frame styles available, but what he does have tick most of the boxes. A couple notable frames he is missing, however, are the full-suspension MTB and fat bike.
Generally a standard frame is around $1K, and a custom frame is probably in the neighborhood of $1500. But in my experience he's willing to make minor modifications to a 'standard' frame for a small up-charge.
Here are a couple habanero builds from my stable:
I had not previously heard of Carver, and I'm not sure why. They seem to specialize in mountain bikes, with a some very interesting frames, such as a full suspension fat-bike (the Trans-Fat). A couple that I find very intriguing:
Ti 99'er: A 29er front and back for $1200. What's not to like?
Ti O'Beast: Fat-bikes are cool. Titanium fat-bikes, therefore, are very cool. At $1400 the frame is getting a little pricey when a Pugsley frame + fork can be had for $600.
Better, Carver seems to have a complete lineup of components. While Moots charges premium prices for their components, you can get a Carver fat-tire fork for $300, either CF or Ti! Remarkable. Though to be honest the Ti rotors are a bit.. unnecessary.
Lynskey isn't really a 'budget' option, as complete builds tend to be $4000+. But right now they've got a 30% off sale (though even then, they're still not 'budget'). But they do occasionally have great deals on lightly used merchandise in their "loft". Right now, that means you can get an XL hard-tail for $2300.
That's a bargain no matter how you slice it. If only they had a similar deal on a 29er...
I almost wasn't going to bother including this, but here it is anyway.. Motobecane (yes, that Motobecane, of bikesdirect fame) is selling a Ti 29er. Either as a frame + fork for the amazing price of $1099 (thank goodness they are sold out) or fully built from $2199 and on up. Those prices are great, but to be honest if I'm going frame + fork, I'll pay a bit extra to get a brand I trust a bit more. If I'm going fully built, that Lynskey for a couple hundred more seems like a better deal, even if it does have tiny tricycle-sized wheels.
That said, props to Motobecane for putting together a really affordable Ti 29er.
Honestly any inexpensive Ti frame is coming from China. It's possible to order direct from China (or this, or this) but I suspect the opportunities for problems are legion. In my opinion paying a premium to Habanero or Carver is a small price to pay for someone who knows how to navigate the Chinese system, and separate the wheat from the chaff.
Anyway, So What's The Point
I'm not in the market for a Ti bike today. The next bike I've been thinking about is a 29er, and until today I would have assumed it would be a Habanero. But to be honest Carver has me intrigued. They seem so be a little more pricey than Habanero though, and I suspect they don't offer minor customizations as Mark does.