The AW11 and Fiero GT were quite a long ways away from 200hp (112hp and 135hp respectively) and any handling characteristics they have (
tragic understeer, in the Fiero's case actually) are not a result of their power, but their chassis and suspension setup. If teenagers had new MR2 Turbos in 1992, it wasn't because they were cheap. They were equivalent to $30,000 in today's USD (base model) when new. I'm confused as to why you are citing exclusively mid engined cars that are
a, not 200hp, or b, not $15k in your argument about 200hp cars for $15,000.
Relevant: In 2000, you could buy a base model V6 Mustang with 190hp for about $15,000. Inflation pushes this a little higher in terms of today's money, but it's still possible. I believe I remember our family getting a 2001 base V6 model for a dealer-incentivized $13,9xx, new. Again, it's a big dumb engine in a smallish dumb car. (Dumb meaning in this case simple, unsophisticated, and cheap)
Yeah, it probably won't happen. It's hard enough to find a new car under $15,000 regardless of power. Hell you can't even get a base model fit for $15k.