Google doesn't really look at the meta description anymore so I wouldn't stress about it.
Although personally I'd not include the domain name in the meta description as you're probably mentioning the brand name in the title tag and it's going to appear directly above the description in tiny green writing anyway. So why not fill your title tag with things designed to encourage a high click through? Things like "Free shipping on orders over $50. Widgets available in 30 colours including popular colour 1, popular colour 2 and popular colur 3."
