ShoeBuy offers the Under Armour Women's Zone Training Shoes in Grey/White/Steel or Black/White/Exotic Bloom for $44.99. Coupon code "RR1068531ARQ" $33.74. With free shipping, that's $6 under our mention from three weeks and the lowest total price we've seen. (It's the best price we could find now by $6 as well.) They're available in sizes from 8.5 and 9.5 7 to 12, although not in all size/color combinations.

Note: Next day shipping is available for $20, but it's unclear whether the shipping options it's expected to arrive by Christmas.