How many transactions taken place in the gas station in the Czech Republic are with a price of over 1000?
Gas station in the Czech Republic implies that Country = 'CZE'
SELECT COUNT(T1.TransactionID) FROM transactions_1k AS T1 INNER JOIN gasstations AS T2 ON T1.GasStationID = T2.GasStationID WHERE T2.Country = 'CZE' AND T1.Price > 1000