ebay is pretty good for these- New. watch out for the seller known as dopplermike- he is well recomended. Debating what to do myself and am due in 5 weeks so better get a move on if i am gonna get one!!
I got one from TENShire. The service was very good but the damn thing irritated me so much that I ripped it off my back and threw it across the rooms when the s* hit the fan.....! I just wasn't patient enough I guess....give me the drugs anyday.
I had mine form Natures gate i think it was, very prompt service and I seem to remember that I could have it for about 8 weeks where as some others say 6 weeks and additional payments after for extra time if you happen to go overdue.
There is a difference between boots over the counter and the obstetric ones. Many hospitals will not let you use them unless they are obstetric due to a risk of them interfering with monitoring equipment. I found the one i rented nearly 4 years ago to be more of an iritation than a help though.
My Boots one actually stated that it was for use in labour. You could hire or buy. To hire it was £50 for 1mth with £25 of that being a refundable deposit. IMO it was fab, I couldn't have got through early labour without it.