Well there is the whole "reliability" factor and of course having No intercooler. Then there is the fact making it reliable (I.E. shaft bearing) and have an I/C (same thing IMO) makes it in the same ballpark (or higher) pricewise as the turbo kit.
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.