The price of wheat produced in Italy will be more or less the same as the price of wheat produced abroad, otherwise Italian producers would be losing money. But wheat price is not the main determinant of retail pasta price, which is more likely dominated by labour and distribution costs and taxes.

Apparently in 2008 the price of wheat peaked at twice its current price (https://www.ifcm.co.uk/market-data/commodities-prices/wheat), but the price of pasta hasn’t halved since then.