Sinc you just registered yesterday, go to Customer Support at the top of the screen and read everything you can on bidding, buying and payments. Too often people join ebay without understanding how it works then fail to fullfill their committment.
Please re-read the user agreement you accepted when you registered yesterday. By indicating you accepted the terms of the user agreement, you also accepted your responsibility to pay for purchases you made. There are not provisions in the user agreement for failing to understand or failing to read the policies before buying.
In the future, do not purchase anything unless you've read and agreed with the shipping as well as other costs in the listing. If you feel the shipping is too high, do not buy the item, just find another seller who has shipping you agree with.
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Non payers should get unpaid item strikes and be added to block bidders lists. Period.