went to a yard sale yesterday and all I could see was the lovely weeping redbud tree. so I'm on a mission to find one. internet says there are 3 varieties: Covey, Lavender Twist, and Ruby Falls. any info on hardiness, performance, where to find for a reasonable price would be great. the only one I found locally is $200. Saw seeds on ebay, but I don't believe they are viable, let alone able to produce a Covey tree. please share any info you have. thanks.