Haven Beauty via eBay offers the Sally Hansen Miracle Gel Nail Polish 2-Pack in several colors (All Chalked Up pictured) for $8.99 with free shipping. That's the lowest price we could find by $6, outside of the deal below. (For further comparison, we saw three bottles for around this price in June.) It includes nail polish and top coat.

Note: Target offers select colors from $3.58 each.