This looks like a really well looked after and enthusiast owned 190 2.3-16 for sale in New York on eBay:
If you want a reliable, fast, fun, and economical car (amazing to get all that in one car!), this Mercedes 16v is the car for you. The car drives and sounds like a stock Mercedes 16v, except power delivery is smoother, the idle is better, it is more reliable than stock, and it has more power! In all my years of ownership, the car has never left me stranded and has always started up and driven smoothly.
If this car runs and well as the owner reports and has the receipts to back up the work, this could be a really fun car and a serious consideration if you’re shopping for an e30 M3 for sale! While I think the $13.5k buy-it-now might be a tad on the high side for a car with extensive mods and moderate miles, but the owner states his reserve is at $7500. Currently at $3150 with 5 days remaining.
Update 2.25.2008: Reserve was lowered and winning bid was only $7100! The pictures and description certainly suggested it was worth more.