I can only speak for how much I paid:
Initial deposit of $10,000, to purchase body/frame;
$8,000 to begin assembly;
$10,000 to prepare car for paint;
$8,000 to prepare final assembly;
$8,000 to begin final assembly;
$8,432 final payment.
In typical Clinton-speak, it turns out the first $10,000 doesn't actually mean that they have done ANYTHING! There will be no body/frame in the SAS shop with your name on it. Your name may be on a list somewhere, but no one, except the SAS owner, has access to the number of buyers on the list, their names, amounts paid, or date paid. All previous information on the infamous queue has come from research by SAS potential buyers. Someone would put together a list, publish it on the SAS site, and a previously unheard-of buyer would chime in and say: Hey, wait a minute, I put a deposit down xx years ago.
Bottom line is that, if the guys who paid deposits in 2007 put up the same, they have paid from $10-18K.
I couldn't make this stuff up! If you want to read about it yourselves, go to www.sasowners.freeforums.org, sign up, and read away, especially in the Build Reports section. It's really instructive.
One of the SOC users used to brag about how SAS isn't merely an assembler, like the other replica makers, they are a limited-production manufacturer, much different than the "cookie-cutters" at the other plants. What rubbish! SAS had a manufacturer's license, which was revoked in 2011, when they tried to pay for renewal with a check that bounced. Don't believe me, check TN state business license section for Specialty Auto-Sports: License #4762, expiration date June 30, 2011.