If you’re in the market for a dual-sided power meter, and willing to take the risk on one from Pioneer (who recently sold off their PM assets to Shimano), this sale at The Pro’s Closet is massive. All of the meters I looked at are new, so if they are covered by warranty (an open point that would need to be confirmed with TPC), they are an incredible value. Especially considering the base retail cost for the crank without a power meter. For e.g., Dura-Ace 9100 usually goes for around $400 new…

FWIW, I have a Pioneer PM, so these prices make my heart hurt a little, and have found it to be reliable and useful training tool.