Nice! I've had mine for about 7 years, ( it's a real PRETTY oxidized pink now! ) and have gone through at least a couple tire sets, useful for 32, 44 or 55 gallon trash containers, pallets, fence panels or just about anything too bulky for my wheelbarrow, I'm moving cinder block with it now, double stacked 4 high! I've even moved 300+ lb rocks ( you'll need some ratchet ties that are also sold at the same place ).
When the time comes to replace the tires, might I suggest you go pneumatic? It's a whole lot easier to drive and can handle the terrain a lot better.