When I was researching kits, SAI priced their kit at $45K and it was less complete than my Unique pallet kit at $21K.
I built my car myself and was told by many at Carlisle and Cobrafest that I had the best Cobra replica they had ever seen. (Which was quite flattering.)
It was recently appraised at $64K, so I feel I got a pretty good deal.
To have built a CSX4000 to the same standards would have taken nearly twice as long and cost about $25-$30K more. I would've probably built a Beck Lister before I'd have spent that on a Cobra. (I still may someday.)
Later,
David