LOL....I too have lost many hours of sleep b/c of Vista!!!
I did see the oval stickers come on sale once for free...but that was several months ago. Depending on when your wedding is, you might be able to wait for a bit and see what comes up.
A few more tips:
If you are going to buy something and actually pay for it *gasp*, do it when they have a free shipping promo (so spend $35 get free priority shipping). This way you get the shipping on your entire order so all the freebies ship at no cost.
Another option is create the item and then add it to your cart but don't order it. About a week after you've done this you will get an email saying 'Oops you forgot to order' and they'll offer you 25-30% off. Sometimes the code is valid site wide too!
You can also try the US site to see if they have better deals. I accidentally did this with my first order and bought everything from the US site during a July 4th sale. They still print/ship the items in Canada...but you get the US pricing.
For those ladies wondering how to fill the OOT bags with vista goodies, you can always place multiple orders for the same thing. So for example if MJKH is able to get a bag, pen, sticky note and note pad for $5.79, she can just place that same order 1 time or 50 times separately. Also play around with adding free items to your cart even if you don't want/need them. For some reason sometimes just by adding in a pen, or keychain the shipping will actually DECREASE!!!