Mautofied and carontrack.com list drift cars for sale. Popular resources for typical passenger vehicles, like eBay and Craigslist, also allow sellers to list drift cars.
Because there's no standard definition of what constitutes a drift car, potential buyers need to read listings carefully and ask questions. Most drift cars use custom modifications, so buyers looking at heavily modified cars need to learn how different types of modifications affect performance. Another option to consider is buying a used rear-wheel-drive car and performing modification or bringing it to an expert. Many high-performance drift cars are made from cars manufactured in the 1980s and 1990s, so the cost of the vehicle itself can be fairly low.