A price in this range (less than 15% of sales transactions) represents an outstanding deal for the buyer, but the dealer may be selling at a loss due to aged inventory, less popular colors, demo vehicles, etc. A price in this range (generally 30% of sales transactions) represents a great deal for car buyers.
Permanent water spots and stains can appear if you wear leather in the rain before treating it, and leather pieces might lose their flexibility, crack and wear out well before they normally would. Spot test products in an inconspicuous place before using them on your leather.
If leather is completely sealed and the moisture flow does not take place then it cannot be classed as leather.  The breathability of leather allows small particles of moisture to move back and forth through the leather and this is what keeps it in good condition.