I also find the choices and selection far greater in the States also.
You made mention of shopping locally, Ally, but sometimes I just can't do it. I purchase Cover Stock 'paper' for wedding cards etc. and I pay $15.99 (plus exchange) at a paper company in the States, the same product (same company, same brand, same quantity) is $72.00 here. Ivory envelopes are considered a 'special order' here and are a ridiculous price.
What can you do.