Just remember to triple whatever quote you get once you add the local fees to it and all our government charges and fees and processing ect to it. trust me, im still sore from my 4x4 labs bar this wouldn't be any different, both require a pallet. Dont worry about the import tax, thats nothing compared to all the other bull**** they will hit you with.
OT: interesting bar, where have i seen this design concept before ?
Your wings are weak (really they are, just take my word for it im speaking from experience) no strength or bracing/ gussets behind the wing. If your serious about mass producing this you need to address that, constructive criticism btw.