For those interested, I was at the Ft Myers thrift shop this week. They have two sets of USMC Officer Dress Blues and about 5 sets of USMC NCO Dress Blues. (additionally, they have a LOT of Army uniforms-dress and BDU)
I recommend reaching out to them by phone before you go there if you want to buy them. I looked at them and they are in outstanding shape. Probably from officer/enlisted Marines that got off of active duty after their first hitch.
The thrift shop is located on Ft Myers and is a certified non profit.
I figured someone may want the modern day uniforms for their collection!