I brought the Astro 320 and T5 collar great bit of kit and gps4u got it unblocked for me even though I never brought it from them at a charge of £33 I ended up buying a T5 mini collar from them again great bit of kit the problem was when I got a bill from FedEx for £17 and when I contacted gps4u I was told I should of been aware of this charge which I knew nothing about it just seems sneaky to me as I'm putting business their way one lad said he brought the new alpha with 5 collars I wouldn't like to see his bill from FedEx