Prices depend on the size of Hippobag you choose? Midibag at £189.99 Including VAT is the cheapest and smallest but excellent for heavier materials like soil and rubble. The most expensive bag is the Hipposkip at £299.99 Including VAT or the Megabag which is priced in the middle at £219.99 Including VAT. Alternatively, Waste King supply for different sizes that are more cost-effective