we made DDs beam as well. and i am soo thankful because she rarely uses it now. cost around $50. it is covered in a suede fabric, but i padded it with 2 old yoga mats because i didn't want her getting hurt. i think that could be why she doesn't use it as much, she says it isn't exactly like a real one. not buying one of those.
i would check craigslist as well. or post an "in search of" on the bulletin board at the gym. i have seen stuff for sale on ours. ebay has some good deals sometimes as well.