First you have to consider the development time, R & D, and just the sheer number of machined parts that are involved here. It's not like you can take a Rigor main frame and attach a shock and rear end and have a functioning dual suspension bike. It's ground up development over 2 years.
The Divides have a tremendous amount of man hours not only in those areas but the regular production time is atleast double that of the Rigor & Ybb.
Some Divide stats:
More than a dozen more machined parts vs. any of the other bikes you mentioned.
Tube manipulation (not only the time but the tooling it takes to do so)
Titanium Hardware everywhere (built in-house)
Fox shock (Kashima coated)
Carbon swing link...not a shelf item...this was designed for one bike...ours...mold cost, production cost.
Yes, the bike has an aluminum chainstay assembly, it is our design manufactured here in the USA....more tooling cost and money to make a production run of them.....not cheap. (If it was ti...add another 800.00 plus dollars). We use aluminum for good reason, it can be formed into shapes that Ti cannot....(think tire clearance, chain ring clearance).
Those are just some of the highlights of why $5,000.00 dollars for a frame, not to mention we are using the best US made tubing we can get our hands on.
Plus it's handbuilt by real humans. Some say we should be charging more for the amount of work and the ride quality we have put out there.
No offence taken in your question, we welcome the chance to tell people why?
Let me know if you have any more questions.