@LimeJellyforBrains Thank you. I've worked for A*n on-and-off for 7 years now, and this is the first time I've experienced something like this where you spend ages doing the "training" and are then led to believe you will be taking part in something on a certain date, only for that to then not happen. So, combined with the promise of exciting "free stuff" having been dangled like carrots, it was a bit disappointing! Unsure if it really is random selection, or maybe due to not confirming availability as quickly as others or something, as I may have taken a day or two.. Am not sure if I'll be able to commit to this again, as I already do an hourly project which isn't really providing me with enough work, so my plan had been to do A*r this once, and then apply for a second hourly project at the end of the month to supplement the existing one. I have recruited my sister to the company though on the back of A*r, so maybe she will end up doing it instead. For some reason this was the first time they ever contacted me about this particular project. 
And thanks @Bettyshotspot for the customs info. From what I saw it wouldn't be an issue ordering from America due to the maximum spend per item, but I didn't get round to researching European countries etc. Have personally ordered stuff from both Japan and Korea in the past, where I think I was sort of expecting I may get a customs charge, but ended up not doing so. Think it may just come down to chance/bad luck in some cases.