I'm trying to pre-order something from Amazon.ca. I've been watching the item for a while and it seems to decrease and increase from time to time. So I was just wondering if I pre-ordered it when the item was $30 and it increases to $40 the next day would (and if it stayed $40 till release date) would I pay the price of $40 or $30? Also one other thing, the item has a lowest price guarantee (it says if the price drops after I pre-order it I'll be paying the lowest price I think) which I guess seems to answer the question above, but I'm not 100% sure. Also it has Free super saver shipping that's free if my item (or total) is $39 or higher, but if the pre-ordered item decreases and my total becomes less than $39 do I then have to pay for shipping or will it still be free? Assuming I ordered something that qualifies for super saver shipping. Thanks in advance.