i ask because we have an all-aluminum trailer that has been an "on-going project" for about 15 years with my dad, its gone through several stages in it's life but now it's a "race-car" trailer for my dad's friend's porsche. we use it all the time, i just never really though about how much it'd cost to buy one and not have made it. i'll get some pics when i get a working digital camera.