For a big balloon party: This bag content 300 g latex balloons with a size of app. 9 inch. which are app. The balloons should only filled with air because ... We computed the price history for the Karaloon 300g Big Party Pack with Amazon price historical data. This item is manufactured by Karaloon. It is sold in the category Toys & Games. Amazon have it for sale at 6.99 £. We noticed a higest price of 7.00 £ and a lowest price of 1.67 £.