Those are some weird numbers. When my dad bought a 386DX-25 in about 1991, it had 8 MB of RAM. At the time, the norm for PCs running Windows 3.0 was about 2 - 4 MB.
According to this, they used either 1000 nm or 800 nm process nodes:
According to this, a Compaq brand PC, featuring the i486DX2-66 launched in Aug. 1992, at a price of $2750.
The Intel Corp., which makes the microprocessors that are the core of tens of millions of PC-compatible personal computers, has delayed its introduction of a next-generation microprocessor until ne…
www.baltimoresun.com
How do you figure? They don't go back that far, and you'd need to know the number of gates it had.
Do you remember what graphics card it had or what monitor? I'll bet you got a modem and printer, too. Still hard to see exactly how you reached $6k, without being ripped off, but $1k for a big monitor wasn't unreasonable, and modem + sound card + high-end graphics card could probably account for another $1k or so.