N.F.
I'm not sure about the mini-cosleeper but I have seen it at Babies-R-Us so you could go there to check it out...also check you local thrift shops for a used one, I always find great things at Once Upon a Child.
I just wanted to tell you that co-sleeping is a wonderful nature thing, do not let anyone make you feel bad about your decisions for your family! You have to do want feels best for your family. We had our 16 mnt old in bed with us for 6 months (from 6-12 months) and I wouldn't change it for the world, it was what he needed at the time.
Good Luck finding something that works for you!
N.