My God you are all missing out. Every single install I do is designed using some form of concrete curbing. I bough my rig from
www.borderlinestamping.com and paid it off in 3 weeks of use. I kinda got away from the standard install meathods and with a little creativity, came up with some really attractive stuff. I know it's kinda taboo round here but I gross $850/day for an avg. of 260 work days a year. No need for all the particulars but I could live comfy from just the curb biz. Oh and its not ugly. I can make it look like real stone brick or plaster castings. colored,stamped, sealed = $12/foot