Upload & Sell: Off
I was selling at an art show this weekend and had a 16"x24" acrylic print of this photo front and center of my display. It didn't sell but it did attract a lot of attention. However, it wasn't radically different looking than a bunch of glossy aluminum prints the photographer across the aisle had - in fact most buyers seemed to confuse the two mediums, at least until the acrylic print was viewed close up. Then the difference was more apparent.
I used ArtToFrames.com. They just started doing them and lump the acrylic prints in with their canvas prints. Their website is kind of a mess, but their prices are good (I had a discount code and paid approx. $45 for mine) and the quality seemed OK, though they did print it a bit brighter than the file I sent them.
I suggest trying a few small ones and see how your customers respond before investing in a really large one.