Rug help!!!

Brittney • I`m 32 years old and have a almost 2 year old son (bday 9/3) and pregnant with our little girl (due 10/4)
Anyone have any ideas for a good price on a rug? I'm thinking a grey shag or white/grey geometric of some kind. I need a 5x7 and for goodness sake I would LOVE to keep it around $100 but I have a feeling that's not possible!