Still can’t afford this year’s LG V40 ThinQ or G7 ThinQ, even after Amazon and Best Buy’s latest round of discounts for both unlocked and carrier-specific variants of the two high-end phones? If you can settle for slightly less processing power, the 2017-released LG V30 and G6 have been repeatedly marked down of late by everyone from Walmart to Best Buy, Sprint, and Boost Mobile.

But going on eBay remains the best way to maximize your savings with absolutely no strings attached. We’re talking no device payment plans, no bill credits, and no obligatory upfront activation. On the not so bright ...