Found this thread because I was trying to find reviews for differences between NavTool and BeatSonic. Funny enough, NavTool is still having the same stocking issue. I had an issue witha company that wouldn't take a used engine back, thankfully I paid with my CC and the bank refunded me and then suddenly the business stopped playing hardball and wanted to know when they could come get their engine lol All bigger purchases now I only pay with a CC and avoid the whole no returns mess if it's not as expected; I'll let my bank fight for the money back.