Your shop inventory is full! Your shop will be hidden from the front page and search results until the item count falls back below the limit. Please consider withdrawing some items.

INVENTORY (314/300)
TEAM FORTRESS 2: 0/300, PORTAL 2: 0/50, DOTA 2: 0/120, STEAM GIFTS: 314/3000, TRADING CARDS: 0/3000, COUPONS: 0/3000, CS:GO: 0/120

help pls. why my inventory 300?

http://dispenser.tf/view_contribution/

3. This is the maximum limit of your shop inventory items, including items from all Steam games, Steam community items and Steam gifts. VIP can apply Backpack Expander to increase this limit. Every donation of $0.6 beyond $50 also increases the limit of Steam community items and Steam gifts by 100.