A staple for every bride-to-be out there nowadays has got to be baker's twine. So cute and adorable and the uses are endless - from wrapping a gift/favor, making a garland, making twine pom-poms, etc. The only thing you can't do with it is run it through your sewing machine (I've tried). But not all twines are created equal. When shopping for baker's twine you should look at yardage versus price but also the ply quantity. The ply quantity refers to the number of strings twisted to make the twine. So 3-ply means 3 strings (2 white and 1 colored string twisted) and 4-ply means 4 strings (3 white and 1 colored string twisted). Naturally this means that the 4-ply feels thicker and more plush than the 3-ply. I can't say for sure but it is also my guess that not all 4-ply twines feel the same. Their plushness might depend on how the strings are manufactured too. But this difference is probably nominal and is just my hypothesis.
I've price compared a single spool of the basic red/white twine from 3 popular sites:
Divine Twine : 240 yards, 4ply, $15 - shipping $4.12
The Twinery : 240 yards, 4 ply, $14 - shipping $3
Bakers Twine : 240 yards, 4 ply, $12 (sale price, normally $15) - shipping $5
If you're in the market for bulk twine then you can buy a 2-pound cone (3400 yards) for $10 + shipping $8.20, here.