I have an Underworks Cotton Concealer muscle shirt in XL, which I've only worn once.  I thought I'd offer it up for $15 plus shipping.  It's quite comfortable, but I found it just wasn't enough compression for my DDs.  It would probably be great for someone with a little less up top, or if you just want something more comfortable than the tri-top to wear under a button-up shirt.  If you're interested, PM me.