The Ten-Dollar Bargains

I love a bargain! My friend and I went to the department store to buy a new hat. The hat I wanted cost $10. I did not have that much money in my pocket, so I made this proposal to my good and generous friend, Moneybags Mike: "I have between $5 and $10 in my pocket. If you will loan me as much money as I now have, I will have enough money to buy that $10 hat and have some money left over. "My good and generous friend agreed and I bought the hat. Then I saw a pair of shoes I could not live without, but I did not have enough money. I assured my generous friend, Moneybags Mike, that I would repay him soon if he would loan me that amount of money equal to what I now had in my pocket to buy the $10 pair of shoes. He agreed. We did the same procedure again for a $10 umbrella. I was then out of money. How much money did I have when I walked into the department store? (no sales tax!)