Looking for good source of acrylic sheets

[Michael Martin]

I recently joined a MakerSpace, and did my first laser cut two weeks ago. So I'd like to try using the templates to cut my own box. However, I haven't found a good source of appropriately sized (or priced) acrylic sheets. Both Amazon and the hardware stores I've searched offer small sheets (eg 0.118" x 8" x 10") or enormous, expensive sheets (eg 0.118" x 24" x 48"). Does anyone offer, say, 0.118" x 16" x 16" sheets?

Thanks,

Mike Martin