haʊˈɛvɚ, mˈɑːɹkɪt fˈoːɹsᵻz tˈɛnd tə klˈoʊz ˌɛni ˈɑːɹbɪtɹɪdʒ wˈɪndoʊz wˌɪtʃ mˌaɪt ˈoʊpən; hˈɛns ðə pɹˈɛzənt vˈæljuː ʌv bˈiː ɪz jˈuːʒuːəli ɪnsəfˈɪʃəntli dˈɪfɹənt fɹʌm zˈiəɹoʊ fɔːɹ tɹænsˈækʃən kˈɔsts təbi kˈʌvɚd.
However, market forces tend to close any arbitrage windows which might open; hence the present value of B is usually insufficiently different from zero for transaction costs to be covered.