Stamps go up January 26th in the USA. The .46 cent can currently be bought as a forever stamp. Once Jan. 26th hits the forever stamps will be .49 cents. Stock up now on them and save in the long run! You'll need stamps for the RSVP envelope, thank you cards for party gifts, and thank you cards for wedding gifts. The .66 cent stamp will be going up to .69. There is no forever stamp for this, so kind of have to wait it out. Stamps will be going down at some point to .47 and .67 but I don't think it will be before our wedding dates.
I did stock up on mine, but had to go to a few post offices to get all the ones I wanted. You can also get them shipped to you for $1.75 but that's a lot of money when you're buying stamps!