Likely one of the first non airhead GS bikes for sale on the cheap. This was the model that came after the R100GSPD that Helge Pedersen traded in his R80 G/S for during his travels. These are much more road oriented but still capable offroad on easy tracks and are quite reliable. For sale in San Carlos on Craigslist.
1988 BMW K75C - $3,500
Cheap and factory serviced. This K75 has had two owners, comes with panniers, recent service records including important stuff like spline lube and fork seals. It also happens to have low miles, it’s ready for another 100k miles of touring fun. For sale in wine country, Healdsburg, CA on Craigslist.