S13's ran a base price around 15k, IIRC. S14's were geared more to a luxury sport end.

I'd like to think that it's possible to slip a 240sx variant into the Nissan line very easily. The chassis is there (XVL), the format is there (G35 coupe, actually has very close dimensions to the S14... just slightly bigger... wider too ), and the engine is there (crappy old oil-burning/leaking QR). Pricing it right around 20k gives Nissan an alternative to the Sentra (not everyone wants a sedan, but not everyone can afford 27k) using components that already exist.

For those of us that miss the good old S-chassis altogether, there's always the G35 coupe, which is in reality an S-chassis look-a-like with a much larger engine. You can always swap to a QR if you're nuts on the 4 cylinder thing.

Anyways, personally, I don't think I'd like to see Nissan produce a 240sx successor untill they develop a better 4-cylinder engine. The KA and SR were great for a decade ago (trust me, we did fine with the KA), but by today's standards they're outdated (and now the SR itself is becoming a weaker engine, as in SE model Sentras).