I might consider entering this Puch I built up recently. It was cheap enough: $20 find on CL. Came with a Brooks saddle that I sold for $30, wheels went on another project, so I built these up with a $20 coaster brake rear hub and 27” Weinmann concave rims. Paid money for the bars ($10), saddle ($10), tires ($30), crankset ($20), and rear spokes ($18), so I suppose I’m in it for $98 as currently shown. The problem is that I really don’t want to ride it for 100k!