so if you go to ebay you'll find that metal sign for like $20. but it's really small, like 15" tall. So i bought that and scanned it at 600 DPI, then increased the size to 4 foot tall. Gave the file to my vinyl shop, and they printed it and attached it to "dibond". That's an aluminum panel (double sided) with foam between the two layers, it's about 1/4" thick.
at this point you could make it double sided. that would be easy. in photoshop just reverse the arrow and re-position the letters. then the vinyl guy could just print it and attach it to the other side of the dibond. i did not do that however, because i didn't need it to be double sided.
now the new 4' tall metal sign goes to the neon guy. he makes a pattern and bends the neon to the color specifications desired. He animated the gold arrow part of the sign using an animation transformer, so the arrow blinks. the "arcade" portion of the sign is static, so that uses a different transformer. If you wanted the neon double sided, the neon guy would have needed to do a lot more work, and the transformer mounting would have been more of a challenge.
total cost of the neon portion was $300. i forget what the vinyl guy charged me.