Being an artist, I use this 1/8" acrylic for my frames. I'm not sure what the big box stores charge but I can order exact sizes. The OCS defaults maps are 22x34. I spec'd out a non glare piece of acrylic 23" x 35" for $54.60 plus shipping. We could do a group order and split the shipping if you all want new non-glare acrylic. It's awesome actually for pictures.
I can get regular as well same size 23" x 35" is $29.70.