buy silver website

I have put up a basic SITE @ [login to view URL] I want to have this site LOOK BETTER, and be more POWERFUL! I would like to have IMMEDIATE QUOTES, and LOCK IN RATES for anyone who is wanting to sell their silver. Liberties, EAGLES, ETC... I will give you a FORMULA that I want to use... For Example... American EAGLES will be (SILVER SPOT PRICE) * .95 + $1.00 the trick is going to be WHERE to PULLL the SPOT PRICE FROM. I will need your help on that. WHEN SOMEONE HITS SUBMIT... this will lock in their BUY PRICE from me. They will put a QTY. of the COINS they HAVE, and I will get their NAME, EMAIL, PHONE, and ADDRESS... along with the PURCHASE PRICE they LOCK in at. Total of 8 Different Coins. they will also need to contact me JUST IN CASE they would like to sell silver that may not be listed. I want to have this all go to an ACCESS DATABASE, and be stored The Developer would need to know how to use REMOTE DESKTOP on their COMPUTER, and must be a reliable INTERNET CONNECTION because you will be logging into MY SERVER.