Forget about paying a 'reasonable price'. Smyrna has discontinued making the Model 27, 40 caliber barrels. Personally, I'd forget about Lone Wolf, too. Their barrels are made in some mysterious place like Taiwan, or South Korea, and the mm converted chamber dimensions often require additional gunsmithing in order to open up the chamber mouths so that they can function reliably.
My suggestion? Whenever I get stuck like this I contact Numrich Arms, Gun Parts Corporation: https://www.gunpartscorp.com
On this one I also wouldn't suggest that you wait. You'll be lucky to get anything at all.
Here ya go! https://www.gunpartscorp.com/search#...%2027%20Barrel (Make sure it'll fit your 3rd gen G27, OK!)