Ok, mods if this doesn't belong here, please redirect it. Thanks.

I'm in CA right now visiting from HI, and while I am here I'm shopping for parts. I picked up an Integra front 24mm sway bar for my EG back home. I've already shipped the front LCAs via parcel post (will take 4 weeks to get there; just in time for when I return). I thought the sway bar would fit my my suitcase but found out today it's too long. I am thinking I should ship it like I did with my front LCAs. However, the only cheap method I could use to ship it is USPS. I did a rough estimate of the weight to be 15 lbs. Which means I could ship it via prioirty mail for about $30 or parcel post for around $27. I definitely want the bar to arrive before I get back (so parcel post is out as it will take 4 weeks and I have 3.5 weeks left in CA).

Does anybody know the weight of the sway? If you shipped one out before, what service did you use and how much did you pay? (Trying not to spend too much on shipping)