It takes 2 weeks, due to the Marks cap, to be able to purchase 1 Legendary Weapon from any of the factional vendors. You can easily earn enough Strange Coins to purchase 2 Exotics every week from Xur. Remove or raise the cap(s) to an acceptable level, Please. Or, lower the amount of Marks necessary to purchase Weapons. *I prefer raising the caps and giving me something to play for after 3 short gaming sessions over reducing the purchase cost. All of the caps are too low. I would suggest 300 Marks per week and 100,000 Glimmer, if capping must be used at all.