How can I identify valuable garage sale mystery novels?

Tang Zhen transmigrated to an apocalyptic world, where humans struggled to survive in various buildings that they built because the ground was covered in lethal dangers that were invisible to the naked eye. Tang Zhen transmigrated along with his mutated cell phone that was packed with miraculous applications. There were all kinds of cities – some could fly in the sky, some could submerge into the ocean while some could become invisible – and shocking secrets were hidden within them. The power of Tang Zhen’s city was… He established a city and quickly leveled up his army with speeding tools. Then, he dominated this alternate world by seizing other cities. He sat at the very top. Beneath his feet was a vast floating city guarded by dragons and surrounded by angels. Countless cannons were also set up at various corners of the city. A million miles ahead, in the depths of the ocean, there was another city as large as a continent awaiting his conquest.

She conspires and provokes the most powerful young master in Beijing! They sign a contract and with his every call, she has to go anywhere and do anything his bidding. When their contract ends, she smirks and said, “I’ll take the money and you can leave. We don’t owe each other anything.” He is Young Master Ya who rules Beijing. He controls the business empire during the day, and he is the strongest king at night. He is cold and women are merely playthings to him. With his power, the women he has eyes on have never been willing to leave him, yet she is an exception. She loves money, like all the previous women, but she is never shy of showing her greed. And he never realizes that he will ever grow a heart for such a promiscuous and cheap woman… He points a gun straight at her heart. “Die with me, or accept my love—which one do you choose?” She pouts and turns around, before she pushes an adorable child into his arms. “Here, there’s your answer.”

Outer yard disciple of the Tiansang Spirit Palace, Xu Xiaoshou, had average talent. However, after coming out of his death seclusion, he realized that everything had changed. He had received a Passive System with many strange, miraculous passive skills: He would become stronger with every breath. He would become stronger when he got attacked. He would become stronger when he got mocked… Xu Xiaoshou was forced to shout, “Oh God, I don’t want to be like this either. Everything I did was because I was being forced to! I am so passive!”

She was born into an affluent family, but she was swapped at birth and got a different life. She grew up in a village. Just as she got the opportunity to transform her life, it got taken from her, and she was forced into a marriage to trade for a marriage for her mentally-challenged big brother. In the end, she died tragically. Gu Yan thought that if she could be reborn, she would make those who had bullied and insulted her regret everything! After being reborn with a superpower, her life became quite different. “With both the medical skill and the superpower, wastrels, shiver for me!” “Also you, handsome boy, I saved your life; shouldn’t you pledge to marry me?” Lu Ye smiled naughtily. “Of course. Just tell me, Yanyan, how many times do you want me to pledge per night?”

This is the era where people prioritize science and Martial Dao. After the great disaster, the human race discovered the Ancient Zenith civilization. They entered the Age of Great Cultivation and began their journey to colonize the Kunlun Realm! This is a time of crisis for humankind and many ambitious powerhouses walk among them! Chu Yunfan obtained the inheritance of the Alchemy Emperor from the Ancient Zenith civilization and the Godhead of a level-9 supreme being. How will he make his mark in such an epoch? You’re a genius? Excuse me, I’m the genius! You’ve got resources? I’ll defeat you with my medicinal pills. Inheritance? The supreme inheritance is right in my head! Our path is an endless dimension! This is the third fantasy novel that Xiao Chen poured his heart into since ‘Soaring the Great Wasteland’ and ‘Martial God Space’. This is a whole new era. This is the Age of Great Cultivation!

New book is out: I'm Filming Variety Shows In Apocalypses ------------ Suddenly becomes a mafia boss in a superpowers world and you are only 3 years old?! Ainsley Sloan, a 20-year-old avid anime lover, suddenly transmigrated into a body of a toddler. The father eloped with a woman, and the mother was just a surrogate mom. The two left behind their 3-years-old baby girl to rule over a mid-sized mafia family! No, this can't be! Ainsley was forced to embrace the abandoned Sloan Family and bring their family to the top of the dangerous mafia world– else she died. But, worry not! With the power of ultimate luck, the help of her loyal subordinates, and the protection of her cats-becoming-human, Ainsley will kick any enemies coming her way! A late encounter with a certain system even paved a flowery path for her. With its help, Ainsley will be the best mafia boss, and an extraordinary one! When other mafia bosses smoke cigarettes, Ain has choco Pocky stuck in her mouth. When other bosses swirl their glass of red wine, Ain blows her cup of hot milk! When other bosses blow their gun after a fight...Ain changes her diaper. Watch the baby take over the mafia world with her unique baby charm! 7 years later. A certain shrewd mini boss: "Ain, how about becoming my fiancee?" The boy five years older than the toddler waved a limited edition BL pillow case as a bribe. A certain system: kiddo, accept his proposal! sucks his money! Wtf you two. Fiancee your a*s!! I'm only 10! PS: If you expect fast-paced bad*ss FL, face-slapping & heroic deed in the first 100 chapters, this book might be not to your taste _____ Ancient/modern setting books: 1. The Dragon Prince's Wife is a Translator (completed)  2. The CEO's Office Boy is a Girl (completed)  Baby protagonist series: 1. I Become Baby Mafia Boss (completed) 2. I Always Become A Baby! (quick transmigration, completed) Dating sim game book: 1. Mr CEO, Move On! (Dropped because of system issue not allowing to update more chapters after accidentally changing book status to completed) Follow my Instagram: @zehell2218 & @willhem_l Discord server: https://discord.gg/axqNyHv