안녕하세요... 오만에 오십불 해달라고 요청하니.. 이런 답변이 왔습니다... 답변이 좀 불불명해서 그러는데... 

삼만짜리 신청하면 나중에 크레딧으로 조금더 준다는 내용인지요... 

Thank you for contacting Chase about your interest in our 
MileagePlus® Explorer credit card. 

Please understand that the MileagePlus Explorer card with 
50,000 bonus miles with a $50 statement credit is a 
targeted offer. If you were not personally solicited for 
this offer, we welcome you to apply for the MileagePlus 
Explorer card with 30,000 bonus miles offer online. 
Otherwise, you may go to your local branch to see what 
offers may be available to you. 

However if you get solicited for a richer premium after 
you apply, we will be happy to honor that new offer for up
to 90 days after your account is approved and with a copy 
of the new offer.