Logitech actually ended up sending me two keyboards. First they sent me the same model but with a different layout (but still usable) and when I complained about the layout they sent me a more expensive model with the expected layout. No returns, few questions asked. Excellent RMA experience but that being said their mechanical keyboards AFAIK all have some sort of chronic issue and just aren't worth the price.

Anker didn't ask me to return the earphones but refunded only 1/3 of what I paid (6m remaining in a 18m warranty). Mixed feelings about it though the experience was positive. On general I expect things to last a lot more than the warranted period. Anyway I still have the earphones and they still work (with reduced functionality) so let's say that I remained with a residual + the refunded amount.