I don't know the exact terms but I recall them being comparable to Disney's direct financing. IIRC it was around 12-14% with 10% down. I'm sure someone will chime-in with the details.
One thing to bear in mind is that the lender does not secure the note by any property, meaning that the interest is not tax-deductible. When you finance thru DVC the loan is written as a mortgage against the DVC deed. When written that way, many US taxpayers can deduct the interest on their 1040. But that wouldn't be the case with a loan thru the company TTS works with.