Noticed that Sony MDRZX100B Sound Monitoring Headphones are $15 each today @ TheGoodGuys. This is $28+ in other places.
Reviews:
Amazon.uk thanks to jg86tsv
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Other Sony Headphones are also relatively cheap
Sony MDRMA100 Entry Hi-Fi Headphones $21
Sony MDRXB200B Over Ear MDRXB200B Black Headphone $24
If you want to listen to spoken work audio, like Podcasts, these would suit. If you want to deal with music/movies, please do not get these. I bought these from Catch of the Day a while back for the purpose of listening to my iPod's music, and they just don't sound good at all.