@Paul0759 -
This is a new item... so you're gonna be waiting a good long while, and no one is going to give you 100% proof. O-like does take returns/exchanges but you pay shipping back. The old model was always somewhat of a crapshoot, although the ones that did come, generally did not degrade - at least I haven't seen anything to show that the power output declined. My own still puts out a steady ~450mW.
Thats what I´m aware off. Noone can give me a 100% proof, but if you say yours is still putting ot 450mW that sounds good. There is just one point. When did you buy yours recently, or a while ago where o-like still had a good reputation?
It´s also good o-like takes returns/exchanges but not that good someone who bought an item has to pay for shipping it back. When for example a laser is underspec or its power is decreasing, its a faulty item not doing what the contract between the buyer and the company was meant for. Therefore the company should refund the costs for shipping it back. It´s their fault in this case and therefore they should care the costs.
Or let me explain this in an example. I´m selling used PC parts on e-Bay. Every part is checked before it´s offered so I know what I´m selling and everything is working 100%. So far there was just one guy who claimed to get an defective item, though I knew it was working like it should. I direktly offered him a refund or a replacement (even not expecting him to send it back, but if at my costs). My lost, but a satisfited buyer who will come back. Later it turned out to be incompatible with his mainboard and he was really happy for my assistance and the offer for a refund or a replacement i gave him.
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