Photoprice.ca has price history graphs. Here's the 135L. Just scroll down past the retailer listings, and you'll find a mixed CDN/US graph show Canadian rebates, followed by a US graph, showing US rebates. You'll see the price did drop a fair chunk with the rebate. You'll also see this is the only US rebate in over 3 years, so you're probably not going to get another deal like this anytime soon.