Cheapest I've seen this one as well.
4000pa auction
LIDAR navigation
5200 mAh battery
Main difference between this and the L10 pro I posted earlier is the additional obstacle avoidance in the L10 pro. Few smaller differences including older firmware for the D9 max (according to support, this should be eventually updated) and inferior hardware which you probably won't notice.
$311.22 if you have eBay Plus and use FRIBLK22.
Well this just made the decision harder. With CR the L10 Pro is $430 on your other post, is it worth the extra $120 compared to this?