Mower Blades (Domestic). Sharpen and Balance £5.00 Quantity: at £5.00 each Add To Basket Enter the number of mower blades to be sharpened. This section applies to normal sized domestic blades only. If you are sending comercial or ride on mower blades, please contact us beforehand to discuss options. A triple ride on set will typically cost £45 to sharpen as the are normally much thicker metal.