Good experience of MPB replacing lens under warranty

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I bought an old model 35mm f2 Canon lens from them back in November. A couple of months later, the autofocus started seizing up and some images were ruined due to this (shooting film makes this a lot worse)! I contacted MPB to let them know about the issue, and they were very understanding and honoured their 6 month warranty, offering a refund or replacement. They had slightly better condition lens in stock at a slightly higher price, so I went with that as a replacement. Despite it being slightly higher in price from the original lens, they didn't charge me extra, nor charge any shipping. This is the second lens I've bought from them, both experiences have been great.

Also, I want to make clear that they didn't ask me to post this review, I just wanted to share the good experience I've had.