Integy mods are very brittle and will easily break, I've brought rx and battery covers for my losi 8 which are fine, Anything else made by Integy, I would steer clear of!!
I'm sure other people will say different on here?
I doubt you'll pay import duties as I'm ordering from the states every week, and as long as I keep it under $150, I'm fine.
As for the hubs, that's quite cheap, I brought a set of 4 HB hubs fro my XL last year at £140. I wanted them so I paid it. If you want them that badly, then buy them
It will cost you $69 = £42.50. Not bad for 2 bits of brittle metal that will break under stress