The «Best price» column shows the lowest placement price among the exchanges in Russian rubles as of the catalog update date, rounded to the ruble. After this date the price on the exchange may have changed, so check the current price and the availability of the site on the exchange.
And «Best price exchange» shows the exchange where the price is the most favorable.
How to find domains by price
The «Filters» panel has the «Best price» filter with the hint «Price range» and the «From» and «To» fields. The «Best price exchange» filter keeps only donors whose best price is on the chosen exchange.
Where to see the price history
See the price by month in the «Data for the domain» drawer, in the «Best price» column. How to open the drawer is written on the page «Domain history».