Ok, fine with me, pray for your XY exotic, but I just can't stand this stupid -blam!-ing shithead whine all the time here any more.
These forums are a real pain in the ass because of all these stupid lousy whiners all the time!
Bubgie do this, do that, don't do this, don't do that, no matter, what they do!!!
But you're part of that problem. When people say things that aren't true and try to pass them off as true it just leads to more bitching. In the future I would say just don't post at all.
So far the only stupid person here has been you. The glitch he is talking about shows xur offerings from different points in time. Because it is displayed through his window we can consider the items displayed as possibilities at any given time. It would be much more worrisome if those items were never seen, at that point you could assume the item being looked for was not in his loot table.
I apologise for offending you, but this is widely considered to be fact, but if you would like me to recalculate i can, 4 exoticshave been sold by xur for warlock.
1/4: 25% chance
25% = 0.25
0.25 * 0.25 * 0.25 * 0.25 = 0.00390625
0.00390625 = 0.390625% chance of it being sold, assuming Xur only sells these four exotics, still around a 3 in 1000 chance