转自Pojo论坛，原作者Boots88

Sneak Peeks
These events are an easy way to get ripped off. People will always overvalue cards that they pull, that is why you need to do the same. If you pull anything here you need to move it for as much as possible. Do not attach some sort of sentimental value to it because this is the perfect opportunity to make some amazing deals. By amazing I mean "on any other day what you have pulled is absolute crap but today you can take advantage of the idiots that don't know any better". Also you need to be prepared for what is hyped and be able to Supply people with what they need to make their new decks work, for example everyone was pumped for spellcasters but then people realized decks using all the old spellcaster support were pretty bad about 2 weeks after the sneak. Cards like Secret Village of the Spellcasters jumped $20+ in the months before REDU was released. The same thing will happen for Harpies when they realize that in comparison to the meta they are bad (they could get good support and I'll eat my words but aside from channler there's not much hope).
Casual Players
Casual players are great to offload the cards that the cluey player would often dismiss. Some examples can include the core of most dragunity, glads, blackwing, etc. decks and fan favourites like Dark Magician and the like. They enjoy the nostalgic stuff such as Warriors, Spellcasters and Dragons and you can usually trade with them for good staples. People you need to avoid however are little kids who will only waste your time, give you grief and get their parents on to you. It also makes you look a little bad if you constantly rip them off. Little kids and sometimes idiots will put the only good stuff they have on the front page of their binder and when you point to it they will say "no, not for trade". This is your cue to get up and leave. The player that thinks they know what their doing offers more promise than the complete idiot.
Sealed Product
You should all know by now boxes are bad and packs are worse. Special Editions and cases are only worth it if there is good promos, the set has a good spread of decent cards like ORCS and you have a efficient method for moving all the cards you pull in the space of a few weeks. If you really want to buy a box and opt for a reprint set.. Don't. Just don't. Our reprint sets suck balls. You can buy playsets of all the decent cards in a reprint set for the same price as the box (usually). Cases or tins however are an excellent product to buy because you can make a calculated investment. With all this sealed product it MUST be bought and sold at the time of the release. One method that isn't seen that often is buying a case of this. You get 96 of everything and if you sell each Kageki, United, Dark Hole and smoke signal for $1, each Kizan for $1.50 and each Fiendish Chain for $3 you make $816. You could quite easily hike up those prices as they aim to either match or undercut the lowest completed listings on eBay. You could easily make at least another $50 with what's left over.
Prices
Everything will depreciate. This is not debatable. If you pull the money cards you need to sell them if you don't plan to use them because every moment you hold onto them you will risk losing money. One last thing I need to include is that if you want the best bang for your buck buy collections off people. Collections contain the good-mediocre stuff without all the crap you have to get when buying anything else. You have no reason to complain about reprints because now you've read this.
Hope this is helpful to someone. Some of this stuff is common sense and you've probably heard it before but hey, I wrote this because I can.

是我的祈愿得到卡片回应了么

售前赛（这个国内先不要想了...）
这种比赛是最容易挣一笔钱的。人们总是高估他们抽到的卡的价值，所以你也应该这样做。你抽到什么都要赶紧卖出。不要联系到任何个人情感因为这是作出大交易的绝佳机会，因为今天你平常抽到算作绝对垃圾的牌今天都可以挣笨蛋的钱因为别人也不知道有什么好牌。你需要装作什么是非常好的，或者可以帮助其他玩家的新卡组运转更好。（后面那个例子就不提了，因为国内没有售前赛，这个不做重点了哈哈）

业余牌手
业余牌手们是很好的倾售对象，用来卖掉主流玩家不要的牌。因为他们中意与怀旧主题的卡，像黑魔术师一类的卡，或者战士，魔法师和龙，你可一把那些卡当作好货出售。然而你需要回避小孩，他们只是在浪费时间，表达悲伤和找家长。这也让你看起来很坏如果你总是坑他们。他们总是把仅有的好东西放在卡本的第一页，当你指向它的时候就会说：“不，这是非卖品。”这时你应当明智的离开。（最后一句有点违和，自己看吧....）

密封产品（补充包）
你应该知道卡盒和卡包只有更差，特典和铁盒只有在有好的赠卡时才值钱，像有说得过去的卡比如ORCS，你有充足的方法在几周之内来为你抽到的卡找到归宿。如果你真的想爆盒或买复刻包--千万别...复刻包挫爆了。你可以在构筑包以平价买到好卡。 相比之下铁盒就好在你可以计算投资。这些补充包就必须在发售日几天内售出。有一个不常见的方法就是买一个箱卡组，你可以得到96张所有卡，然后以1块/Kageki,团结, 黑洞和狼烟，1块5/Kizan，每张魔族之链3块的价格卖出就可以得到816块。你可以随意的根据ebay来调整价格，而剩下的卡至少也值50块了。（皆为美元）

价格
毫无争议的是所有东西都会贬值。如果你抽到不想要的值钱的卡就赶紧出掉应为你存起来的每分钟都在承受贬值风险。最后一点要提的就是如果你要将钱砸向其他玩家的收藏。玩家收藏有着好的或正常的东西而没有其他开包带来的废卡。
我希望这些能够对人有帮助。

这篇文章在Pojo论坛上饱受争议，作者不得不在另一篇文章上致歉。在翻译过程中我也有所的删减和转述，然后就变成了这么短的一篇....但是总的来说希望能够对有志开店或者卖卡挣钱的人有所帮助（虽然我出卡都是折价....）

顶起

论颇回的方法。。。