I was looking at those in the beginning as well and then built one based on their trailers. Never actually used it and now selling it for only 5k obo, which is less than material.
Located in Texas 2 one four 7 three eight 22 one eight.
Nice trailer Pat Brown.
Here's some detailed pics of mine I just finished. It's for sale if anyone is interested. ;)
Way over built, all steel and all welded with exception of the tool boxes which are bolted on with 8 bolts each.
Short answer is when money allows. It cost lots to keep the coffee going and we have at least 2 more years before we get a decent yield. But if investors jump on, then possibly move next year. Time will tell.
Can't wait to see your bumper done.