I have this one
The First Years Close & Secure Sleeper at Toys OnLine Australia

I didn't use it as often as I thought I would as I still prefered my DD to go on her monitor on her cot. but it was great for day sleeps in the lounge and when we went to peoples places.. I would look on ebay and not buy brand new. I do not think they are worth the money brand new.. I paid $30 for mine and that included postage..

As for on the bed.. I wasn't able to get comfy as my DD wanted to sleep cuddled up and this just wasn't possible.. Oh and mine has a little light which is something thats good..

I also noticed how old your bub is.. I don't know how much use you would get from one now.. Depends on how much bub moves..