There are at least a couple of services that do exactly that - take your inventory across the border and ship your packages from USA on your behalf. One such company is http://chitchatsexpress.com based in Markham and Missisauga, ON.
That's great if you live in Markham or Mississauga. Otherwise, there's added shipping costs to get it to them then their fees. Fantastic if you are doing insane volume as the volume will offset the added fees, otherwise, it'll be expensive for small business operators. Great to know they exist though...thanks!
well I have used a mail forwarding company in Connecticut- called www.parcelbound.com
They'll receive any of your US purchases and forward them onto you in Canada for a pretty low rate. Also you can track it from the purchase point all the way to your door... Very easy and professional service, and you get your item(s) in like 2 or 3 days.
I was wondering how are you currently handling this? Are you using any broker to help cross your shipments over the border or managing everything on your own? If managed by own then how are you experiencing the charges? Going with USPS across the border would definitely make sense if the charges to transport them across the border would be minimal. Also, you can directly manage sitting at your home from Canada by using the Multi Carrier Shipping label app. In the app, USPS configurations can be perfectly set up.