I think the avent are a bit cheaper than the Medela, but still £80 to buy new. I can't recommend it enough though, I got mine on eBay for £20 and its only been used a couple of times. I found expressing with Edie HIDEOUS but so much easier with this pump, and with Edie I had the manual version of the same pump. I got 5oz out today, the most I ever got with the manual was 2. And that would take an hour, today took ten minutes.