first time selling on eBay I will never be back not even buying.

My first time I’m selling on eBay I usually buy stuff but wanted to get rid of the brand new Apple Watch s11 46mm I had bought it sold for 250 since I have the dude a discount 20% off then I was shared I would be getting paid 280! Fine -30$ fees -26$ sales tax -40$ TRANSACTIONSFEES THEN I HAD TO OAY 6$ FOR THE SHIPPING LABEL WHAT THE MIND U THE BUYER PAID FOR SHIPPING ? truly is the worst selling experience every I’m so angry holy like I feel like gave this away for free and the fact that the buyer had to pay 280$ when eBay took 70$ and I only got 210 this is the worst man.This makes me feel sad for the sellers I bought from before knowing how eBay greedy self takes anyone recommend me anything except eBay too sell on?