I think you can give us the price, so other members will know how much you are selling your website. I like the design, but how it will be after sales? Did the customer still get any update from you or only sell all of the domain and the customer manage the website by themselves? After sales are important, the customer will not confuse if they get a problem in the future.
IMO OP don't want tell us in public about the price. That's why he is giving us his contact on telegram to disscuss more further if anyone interested. Will you buy the domain or just asking without any intention to buy anyway? You can ask that all questions through telegram with OP
I think that will make the customer know how much the website price that he offers. If the customer agrees with the price, they can continue to contact him using telegram. We do not know if they make a deal on the telegram, and if somehow, the customer has a problem with the deal, he will come back to here and ask us (which we do not know anything about). I am curious about the price of a gambling website, and I think it will be better to tell us here.