Avery Labels for favors, tear packs, etc.

Are these the right size for making our monogram for the tear packs, favor boxes, reception envelopes, etc. I don't want to order the wrong ones.

750 2'x2-5/8' rectangular, white labels for about 53 bucks. (plus 10% off)

(By the way... Avery has a discount code 'springevent' to get discounts on labels.)

Anyone know a cheaper place to get labels?http://www.avery.com/us/Main?action=product.Details&catalogcode=WEB01&node=10211066&productcode=6578