A few options

for a black quilted cros*****ody bag, not all of these have gold hardware, also not sure if the size is going to work. But they are certainly a lot cheaper than $318:

Michael Kors: $74.4 http://www.theoutnet.com/product/106149?cm_mmc=LinkshareUS-_-J84DHJLQkR4-_-Custom-_-LinkBuilder&siteID=J84DHJLQkR4-4f2.yYBwg7ZALjBgyKTvOQ

Rachel Roy: $39 http://www.rachelroy.com/Sequin-Small-Cros*****ody/110267909,default,pd.html?variantSizeClass=&variantColor=JJNW9P0&cgid=110359374&prefn1=catalog-id&prefv1=rachelroy-catalog&ep_tag=AF2010

Aldo/Plater: $35 http://www.aldoshoes.com/us/handbags/cross-body-bags/product/90206773-plater/79?gan_clickID=0004c71aeda98f950a42ed28e4e10eb8&gan_affID=k108283&gan_affName=ShopStyle.com&cm_mmc=Affiliate-_-GAN-_-ShopStyle.com-_-Primary&utm_source=GAN&utm_medium=ShopStyle.com&utm_campaign=Primary&utm_content=Text&utm_term=NO

DSW/Urban Expressions: $29.95 http://www.dsw.com/handbag/urban+expressions+natalie+cross+body+bag?prodId=230521&cm_mmc=affil-_-ShopStyle.com-_-main-_-main - choose the black color