Dear Employer,
Thank you so much for giving me the opportunity to consider your work.
First, please do not confuse with my very low offer. It is because I recently try to get job in this website and should offer low costs to become popular, however I have 7 years of professional software engineering experience (4 years with Java and 3 years with C++ and Qt Library) plus 4 years of Bachelor degree. If you admit to work with me, then we can progress for an iterative development. That is to say, I immediately develope a beta version and share with you, and we can finalize it with close interaction. Additionally, I have no other employment in these couple days, so we can finish all the work even in a few days.
Please do not hessitate to ask further questions.