Sorry but I dont trust this. There is no legal way(according to my knowledge) with which OP can give domains for half the price. I am one of the good customers of namecheap with over 100+ domains with them and they have put me in special group where i get to pay fraction lesser than regular renewal or buying prices. I had chatted with support serveral times, they dont even have special coupons for some special circumstances which can give you half the rates. So he has to pay the full amount. Paying full amount and giving the domain at half the price is not possible so thr can be one of the possibilities given below:
*] Use of Stolen CC
*] Use of Hacked account with credits
*] Maybe utilization of amount he got by selling a domain in Namecheap Marketplace but if he did so he could have requested withdrawal from them & NC would have done that.
No other reason I can think of. You can criticize me for writing this like one guy did to rox. But fact remains thr is something shady here. If thr is nothing as such then OP should tell higher authority abt how he is able to provide domains so cheaply.
Sorry if I am wrong but "Precaution is better than cure", Isnt it ?