The scale itself seems to work well.  But I ended up with the same problem a couple of other reviewers have had - and it has to do with the plastic clasp getting stuck shut.

I actually took the scale with me to the store when I was buying a new piece of luggage because I wanted to compare suitcase weights before purchasing one.  So I clasped the scale to a very expensive piece of luggage and weighed it. But, when I went to unclasp it from the suitcase, for the life of me I couldn't get it to unclasp!  You'd think such a simple plastic clasping mechanism wouldn't be a problem, but there it was, firmly locked to the $220 suitcase right there in the middle of the store!  No matter how much pushing, pulling, squeezing and twisting I did, it would not let go!  I tried using my car keys to wedge it open.  No luck.  A sales clerk eventually heard all the commotion and tried in vain to help me.  She even got a screwdriver to see if we could pry it off. Nope. I'm not making this up!

Since I didn't want to cut the strap, I ended up having to purchase the suitcase (with Balanzaa scale firmly in tow), bringing it home, and spending an hour with screwdriver and pliers getting the thing to release itself from the handle of my unwitting suitcase (which I eventually returned to the store and got my $220 back).

I know this all sounds silly, I mean how tricky is it to insert one end of a simple plastic buckle into the other.  For Pete's sake it's something we've all done a million times.

Alas, after doing some risky experimenting, I discovered that unless you buckle the clasp perfectly straight into the other end of the clasp, that it will jam and consequently become nearly impossible to pinch the release mechanism that unbuckles the clasp.

So all this to say: the scale itself works fine.  It's the 2-cent clasp they used that's the real problem.  So buy this unit if you want to, just be very careful in how you clasp the buckle or you'll either end up spending hours prying it loose with a screwdriver, cutting the strap, or leaving the Balanzaa unit dangling from your suitcase as you check it in at the airport.