That because their chemical properties both concrete and asphalt leech carbon dioxide from the air . So one of the best things we could do to fight global warming would be to lay down fresh new roads every few years . <| sep |> I started working at Walmart as a cart pusher . We closed at 8 pm Thanksgiving day and everyone went home . Of course that was when they still were barely clinging onto we care about family and letting the associates celebrate Thanksgiving . <| sep |> Yeah it ' s pretty bad here Pretty much always cheaper to buy from somewhere like HLJ or BanzaiHobby . But then you have to worry about the dreaded vat and customs charges if you spend over 15 . So I feel compelled to make cheaper smaller multiple purchases , people say that ' s more postage . I guess ? But not really since it ' s mostly down to size and weight anyway , and the cost of getting added vat and customs charges outweighs any shipping savings on a big bulk order . This comment just turned into a rant on how crappy over customs charges are , sorry about that Anyways you can find the graze ein on places like Banzai Hobby for just under 7 at the moment , you ' d have to add on the shipping though , with SAL the total is just over 10 . Not exactly prime shipping but hey ho .