If you use the BOGO (Buy on get one free offer) you can not make offers you have to buy the items as price stated.
I am willing to combine shipping just ask before you pay. Please wait to pay let me combine everything first. United States customers cost of shipping is the price of first item plus .40 cents for each additional item unless cost if over $9.00 then I will send a refund for excess shipping. For United States customers if the order is over $50.00 I ship priority mail so it is insured. International buyers most items are shipped with E bay shipping and the cost is around $15.00 for up to 8 ounces, Canada is $12.00 for up to 8 ounces. I the packages for International are over 8 ounces then the cost is $22.00 or more depending on weight.