In this paper we analyse the relationship between gravity variables and f.o.b. export unit values using Hungarian firm-product-destination data. By taking firm-product level selection into account we show that export unit values increase with distance even for particular firm-product...

We analyse a very rich and unique panel database which provides information on exports at the firm-product level. A stylised fact in the data is that many firms add as well as drop products from the export mix in any given year. Motivated by recent theory we investigate what determines the...