I have been a bit vague here. I am playing the trial game on Xbox One. I did own it back when it first came along and got to level 24 with one character - then I sold it on Xbone and switched to PS4 for the extra content.
Now in two weeks, I'll be switching back to Xbone again for TTK. However, I loaded up the trial game to see my character stuff and I had 12 strange coins and 24 motes of light. By doing tons of patrol missions, I got my vanguard rank to 2 and earned enough marks to buy two pieces of armour. Stupidly, I bought the gauntlets last night without thinking about Xur. That took me to level 26. So I can buy one more piece of legendary armour with the remaining marks.
I'm still one strange coin short to buy anything from Xur. The trial limits you to patrol missions in the cosmodrome only so I can't do anything else except hope I get a strange coin from the postmaster for the public event.
Why am I doing all this? Because if you get to light level 30 by August 30th you get a sparrow, an emblem and a ghost shell. I MUST BE NUTS! BUNGIE HAVE GOT MY NUTS FO' SURE!
EDIT: Just bought the chest armour from Zavala so I'm now 28. I can try and do loads of Wolves encounters and hope that one of those blue engrams gives a coin. That's another route.