I think you mean Bargman as the brand name
Eastern Marine has a pretty good selection of Bargman and other brands. Of course Amazon, various RV sites, stick and brick stores.
I replaced our triple Bargman incandescents with triple Bargman LED's. You'll see those at $59.95 each on the linked page.
NOT plug and play. The Bargman units need their wires spliced together then spliced into the RV's wiring. I liked that, because I wasn't having problems with just bulbs, but sockets also. For that reason, I was glad to go to hard wiring.
LED's draw so little current that the flash rate may change. Ours did. This can be addressed with a different flasher, adding a resistor, or adding another incandescent bulb somewhere. I added incandescent turn signals to our mirrors, and that brought the flash rate back into line.
The Bargman LED's aren't just Bright. There's an Intensity to the Color as well. Very dramatic difference in how they appear in use.