卖东西多送你钱，有这等好事吗？

为女儿买了个Ipad， 试了下觉得挺好玩。 于是为老婆和自己又各买了一个。 自己买的是3G，64Gb 的。 玩了两个月， 觉得不好玩了，主要是3G 上网收费较贵，Itune下载选择也有限。 于是决定在Craigslist 上卖掉。 加上Case我开价725刀。 想想原价829刀， 还要加税， 时机是圣诞购物，感觉上开高了点，但有还价空间啊。没想到收到两封邮件都很爽气：邮件一：I will like to buy it as a surprise gift for my son, and im gonnaneed your assistance in shipping it to him because i'm not in thecountry right now,(1) i will like to know the reason why you sellingthis item (2)i will like to know the last price for this item (3), Iwill like to see more picture of this item. and won't be back in acouple of months but i hope it's in a good condition.I will pay youthrough PayPal account and will be adding an extra of $100 which i amsure will cover the shipping expenses via USPS Express MailInternational® (EH). If you have an account with Paypal, just getback to me with your paypal email, so i can make your payment.If youdon't have one,you can go to www.paypal.com and easily sign up for apersonal account since it's free,I want your honesty in return to myfaithfulness to you during this transaction.Your immediate responseis really appreciated need your reply soon, Thank you当我说：One thing I have to mention that we bought 2 ipad (one for mydaughter, it is 16gb) I thought I kept one box but it is mydaughter's. There is tiny 16gb on the back of box. Everything else isgood. I also kept this one's receipt which has at least half yearwarranty.他说：Good to read from you, am ok with the Ipad am very sure my sonwill like it, all you have to do is to get back to me with your PayPalaccount email id so that i can make out the payment and pls make sureyou also send me the picture of the Ipad so that i can forward it tomy son...爽气的有点过头了，出价比原价高，还有两封急不可耐的催促，就不列举了。。。。当收到第二个人的邮件后， 我不敢卖了，邮件二：Thanks for your prompt e-mail. it was just exactly what i wanted and i hope the item is in good condition and i will like you to answer the following questions..Do you still have the original receipt?The original box/container and its accessories,would these be included at this price?Why are you you selling this item? for security purpose...Can you send me some pictures of this item from varying angles?I will like to purchase this item for my son in school out-of-state and i will be more than happy if you can get this item shipped. I am willing to offer you $750 and also include shipping fee of $130 via USPS Express mail service i will be paying you via my PayPal account, If my offer is accepted send me your PayPal email address including your phone # so that i can pay in right away... I work on the sea and do not have much time around me... Make sure you get back to me so that i can arrange for the payment...I await your reply.. 这位更离谱， 不仅加了价，运费也给的奇高， 有这等好事吗？想想Paypal是收到款发货，不至于有风险， 但显然里面有猫腻， 是我多心了， 还是真有什么。。。。大家帮忙出出主意， 这种情况我能卖吗？