Is there any way to reduce merchant repair costs?

//ads -- adsterra.com -- native banner
?>
Since the barter skill doesn't affect the repair prices, I'm not sure if there is. While I'm not certain, I assume that all of the merchants charge equal prices for repairs. I'm approaching the vanilla game level cap of 20 and still can't afford fixing some of less common weapons such as Fat Man.
I'm aware of the Alien Epoxy, but I have no desire to start Mothership Zeta yet and this is a disposable item with limited quantity (and would be off-topic as an answer).
Pictures about "Is there any way to reduce merchant repair costs?"



Merchant Account Fees - 7 Ways To Lower Your Rates
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Kelly L, Plato Terentev, cottonbro, Darya Sannikova