I have been using Ehobby for some time, this is what I do.
1. yes you can import mags metel plastic ect.
2. If you want to save money have ehobby declair the total value of your purchase as $20.00 even if you paid $200.00 for your items. by doing this you will avoid paying any duty and tax.
3.all large shipments get a tracking #, shiping time usuly takes 5-7 days to arive in Canada.
I have spent over 900.00 using Ehobby and have not had a problem yet