If you can find new appliances, hard-surface countertops, and cabinets for the price of an IRS conversion, I'd like to do business with your contractor. I'll take 100 of them.
That's at least $50K at a bare minimum- and that's moving no appliances, and certainly no plumbing.
Kitchens are where money goes to die, and the cost has almost nothing to do with functionality. The old cabinets and appliances will not kill you in a roll-over, they just aren't stylish enough for the average American woman (who doesn't really want to cook anymore anyhow).
People who spend >$50K on custom cabinets crack me up. Even moderately priced box cabinets almost never wear out anymore - they just go out of style and MUST be replaced (or painted, at this point in the HGTV universe). Counters even more so. A formica countertop will outlast most of mankind's sojourn on this blue ball, but the landfills are full of them because the white women of North America require quarried countertops of a very specific color and grain. Often, even that isn't enough - the quartz counters need to go, because granite is the thing now. I've seen people pull out hard surface counters because they didn't like the edge profile.
Maybe Mitch needs to put on his big-boy slacks, take a stiff swig of lambrusco and tell Mrs. Toll that not flipping and dying in the clown car is probably worth more than that planet-saving politburo-approved induction cooktop, even though it will likely cost less
... then go hide in the garage.