Anyone know a good place/website to buy a vocal/soundproof booth? (singing, Nashville)

[kiwifruit2]

I am moving into an apartment and will need to figure out a way to still be a able to practice singing. I was looking at vocal booths online and I can eventually afford a $3,500 booth or more expensive one, but I'd like to find one cheaper for right now, say around the 1,000 range. Where are some good reputable places online to look? OR are there any places in Nashville who sell them that I could check out when I get there?

Thanks.