It sounds like you have the 1.0+ board set, with red and green data cables going between each board, rather than the cables with the phone jack type plugs. That set, even buffered, is less reliable than the new 2.0 set. An upgrade costs $800 and takes about 12 or so hours to do. It may affect price somewhat vs someone selling with the newer set. I’m not sure what price standards are going for as I more often see the ECLE and RR in the market. Have you checked old pinside listings? Just make sure to note whether the listing says it has the 2.0 boards. If it doesn’t say, it probably has the older boards. As for shaker and invisiglass, that is about a $500 difference retail. So, that may bump up the price a bit for the right buyer.