I just looked again at the plug pack page and noted that "plug packs are produced in spring for shipping in April / May." I think Rick was initially looking at the trays, which are grown "to order" and available throughout the season... but those are even smaller plants, and I'd want to give them time to grow before winter too. They'd probably do fine in a cool greenhouse, but I haven't had much luck babying herb starts under lights in my basement.
Rick, you might also give them a call and see if they can estimate shipping... also, since they are in Canada, we need to know who would bear the cost if plants are seized at the border (unlikely) or delayed long enough that they arrive in bad shape.
I don't mean to sound like a wet blanket... I love the idea of a Richters order and want it to go smoothly.