No. you only have to pay when you have exceeded your credit limit.Credit Limit is when you have a certain amount of money you can use e.g.£500. so when you buy things off your credit card the price...
Many credit card companies offer balance transfer options whereby you can transfer the balance of one credit card to another. Be aware that the terms offered for balance transfers can be deceptive...
Typically 2-3% for mastercard and visa. I believe American Express is more.Texas Parks and Wildlife charges 2.25% extra to renew your boat registration online. I think that is to make up the credit...