You should accept paypal for on line purchases. Credit cards are good for craft shows. You have to pay a monthly fee for credit cards. Also some companys charge a precent of your sales, in addition to the monthly fee. I have found that doing craft shows alot of people will charge .So it is worth it. I would set a price, like no charges under 20.00. It depends on who you set the credit card up with.Then you need to buy a knuckle buster. Credit slips, etc. You also have to pay at craft shows for phone lines.I do not do this type, I call them in when I get home. I have had no problems.Be careful with trying to sell on line. Some people like your price, but when it comes to shipping, thats another story. Hope I helped somewhat.