Clean, well-organized and spacious, Mile High is a bargain hunter's dream. How about a cashmere turtleneck for $1.99? Or maybe that immaculate leather jacket for six bucks? If you're feeling flush, splurge on a Dooney & Bourke handbag for $14.95. There's even a decent selection of books and crockery. Bring cash and your size chart: There are no fitting rooms, and Mile High doesn't take checks or credit cards. But there is an ATM on the premises, and with prices this low, your bank's service charge may be the most expensive transaction of the day.