Possible Clues:

• Shares first place with plenty in reserve
• Shop that carries a particular item
• One should know what's in store — as usual first
• Retailer carrying a particular item
• 'One that keeps it for a sail, by the sound of it (8)'
• One has the stuff for sale yet sticks to it
• As usual, first going to the supplier
• One keeps it for a sail, by the sound of it
• Retailer of a particular line of goods
• The one who has ties for sale? (8)