Difference Of Impetigo And Cold Sore

Riddle of Putin and Medvedev

of life. A man came into the store and saw that they sell portraits of Putin and Medvedev. Quality, size and materials were exactly the same, but Medvedev worth 320 rubles, and Putin - 280. The man was surprised and asked the seller what the reason. The seller did not know the exact answer, but thinking, put forward its own version.
What he said?

Seller said:
- Maybe Medvedev to buy less? ..