Yes, I use a My Weigh Ultraship for up to 55 pounds. Vhs tapes are large, add a box that will hold them safely and add in all the shipping peanuts + the shipping includes (as terms say) insurance and delivery confirmation (required) + $3 handling.
Now, the handling fee I might drop. I've been adding it to cover cost of shipping peanuts (I bought a 50 gal bag for $10) and tape ($4) and (yes I will admit) cover (at least partially) Paypal/Ebay fees. I have read up on this, and some sellers add it, others don't. It is definitely not set in stone as to me adding it to future auctions or not.
As far as I know USPS (I'm not sure about other shippers) rounds to the next pound, 1 pound 1 ounce is 2 pounds. So I round up when inputting into the usps shipping calculator. This package weighs 3 pounds 13 ounces and is 12 x 12 x 8 inches.