I used it for the first time last year.  The shipping cost wasn't the real expense it was the handling fees that they hit you up with later.

However, I will utilize the service again this year as it's a heck of alot easier than trying to take them all with you.  

Only piece of advice would be to pack the balls well (I utilize the ball pouches that come with Dynothane equipment, but a buff-a-ball would work too) and place them into tote bags which go into the overshipper.  That way you don't have to even take the empty bags with you...just open up your box and get walking.
--------------------
-Chris: DJ's Pro Shop : Auburn, MA

Also good advice John...

...don't ship your shoes or other personal gear with the balls.
--------------------
-Chris: DJ's Pro Shop : Auburn, MA

using the usbc site is very confusing, especially if you are bowling on a saturday or sunday.  i have never been able to figure out how to tailor the arrival date for a weekend.  shipping back home however is very easy.  just take it to the booth at the center, fill out forms, pay fee and done.

Thanks for the advice. Can some of you list some actual prices you paid?
--------------------
No, my name is not Prince and I'm not particularly funky.

If I recall I paid $23 dollars on the way out and $38 on the way back.
Took like 5 days to get out there and the same on the way back.

Makes airline travel much easier.
--------------------
If it doesn't have DT or RG stamped on it.
Just leave it in the bag.

Tryin bowling.com, they have free shipping on everything I believe.  They will probably be cheaper in the long run.

ttt
--------------------
No, my name is not Prince and I'm not particularly funky.
http://www.myspace.com/lefthandedhammerpride
http://members.bowl.com/FindAMember/memberView.aspx?mp=418&ms=2006&s=2006-2007
My dumbass 2004 Masters finish (tied for 292 with Gene Vincent):
http://www.pba.com/results/rrscores.asp?Year=&TournamentID=148&RoundID=2