I would like to allow people to sell their items on my site and receive payments directly to their PayPal account. This used to be easy with the legacy buttons where you could just store their email in the database and when the button was produced it would insert their email address:
<form action='https://www.paypal.com/cgi-bin/webscr' target='_blank' method='post'>
<input type='hidden' name='cmd' value='_xclick'>
<input type='hidden' name='business' value='the usersemail address'>
<input type='hidden' name='lc' value='GB'>
<input type='hidden' name='item_name' value='$make $model'>
<input type='hidden' name='item_number' value='$id'>
<input type='hidden' name='notify_url' value='http://yoursite.com/ipn'>
<input type='hidden' name='no_shipping' value='2'>
<input type='hidden' name='amount' value='$price'>
<input type='hidden' name='currency_code' value='GBP'>
<input type='hidden' name='button_subtype' value='services'>
<input type='hidden' name='bn' value='PP-BuyNowBF:btn_buynowCC_LG.gif:NonHosted'>
<input class='QuoteButton' type='submit' name='submit' alt='Buy $make $model' value='BUY NOW'>
</form>
