Did a watch strap change for my Citizen NH8350s. I ordered a crocodile grain and an ostrich grain strap from http://www.holbensfinewatchbands.com/ and the average cost was $40. Here are some before and after photographs from the strap change done a few weeks back. You will need a watch maker tool and I bought mine from Gnomon watches at Millennia Walk. They some nice watches too but I could only afford the $15 tool.