Nah, it was two horns, dual-tone for £16 + VAT, they might not have them anymore. It's the same as these though:
http://www.priracing.co.uk/product.php?xProd=409&xSec=66
All you have to do is split the 2 wires so one set go to each horn, no extra relays etc. required - can't fault them as they've been on mine for ages now and still working great, nice loud dual-tone!