This Creative Playthings, slot-together, 2-story dollhouse is a later model, being sold unfurnished, and it's in good-but-played-with condition, so no museum piece. Still, I'm surprised it hasn't gotten any bids yet; back in the day, $99 might have been an aggressive opening bid, but a decent closing price. I guess the real estate bubble has affected the dollhouse market, too. That, or everyone's just saving up to buy their toilet first.
Vintage Creative Playthings Dollhouse 23x23x24 Wooden, opening bid $99+15s/h, auction ends Sept. 7 UPDATE: just like real real estate, neither house sold! [ebay]
The same seller also has a 1-room CP house for sale, in case your kid's doll is downsizing.