I gave you advice about it already, if you recall. How much of it did you take?
First of all, notice that I moved your topic to the Conversation Parlor. We're a playing card forum, but we're a forum that mostly follows the International Standard design, in all its many wonderful variations. Your deck is something completely different. It's like trying to sell milk in a tobacco store - it's not a good fit. How many game-oriented forums and websites did you visit and make inquiries about? Think of sites that carry and talk about non-traditional board and card games - something like ganjifa would be a good fit for them.
I'm a fan of a game that might be as old as ganjifa if not close to it - shogi. Shogi is Japanese chess, based on the ancient Indian game of shatranj. I've seen a version of shogi that was created by an American game company, trying to promote it and sell it in the US. The packaging was actually pretty slick, the rules were made easy to understand and the pieces were redesigned - same shapes, but with English letters and directional indicators instead of Japanese kanji. In other words, the game company tweaked the game to better suit the audience, rather than stick to a 100% faithful reproduction of the original. To be faithful to the original would have been a death sentence for the game - it's losing popularity in Japan, so how could you expect it to be an easy sell in the US? Some Japanese versions aimed at interesting children in the game replace the Japanese kanji on the pieces with animal characters and arrows pointing out how the pieces move.
So, your game was as expensive as it was because of using round cards? Why make them round? Make them rectangular with rounded corners, just like ordinary International Standard cards - and even give them indices in the corners to make them easier to use! You can stick to the traditional circular shape in the middle of the card, or you can alter the design's shape to conform to the modern standard of a rectangular card design. It's still ganjifa, but it's 21st-century ganjifa, made easier to manufacture, package and, most importantly, play. If you used a very thin card stock, you could have fit the entire game into a single package of the size and shape used for holding two decks of standard playing cards. Standard packaging also reduces your costs.
You might even consider updating the artwork. People seeing the traditional ganjifa art might think it's an old fashioned game and not be interested in playing. Just as shogi games were updated to make them more appealing to new audiences, perhaps your ganjifa cards can be updated in the same manner. Picture rectangular cards with updated two-way designs and indices, but all the traditional elements of a ganjifa card retained as well.
How easy or complex are traditional ganjifa games? How much effort did you put into educating potential customers about how to play? You could have reduced your cost of manufacture by taking the rules and posting them online instead of including them in the package, thus giving people an opportunity to see how the game is played before considering a purchase. I envision a website with not just a dull list of rules and card descriptions, but also videos with instructions and even game strategy - imagine how much fun that would be to create? Putting the rules out there for the world to see functions as a means by which to promote ganjifa in general and your project in particular, while at the same time eliminating the need for you to include the rule sets inside your packaging and reducing your costs.
You face an uphill battle, marketing a game such as this. But it's no different in many ways than the battle faced by any game designer creating a unique game with a unique set of rules and unique game pieces - any game from Uno to Monopoly to Yahtzee to Chutes and Ladders was unique when it first was created, and the public had to be educated on how to play before the games became popular. You have a distinct advantage - your cards have been around for centuries and have a rich history to them, with many "play-tested" games you can play with them, I'm sure. One could even take a subset of ganjifa cards to play standard card games, if they were so inclined.
You can make this into a successful project. Be flexible, update your design for a 21st-century audience and make it easily accessible to them.