how to retain values of the form from the checkout page to previous form page without using session

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HTML

PHP

I have two forms one on the home page, the home page form is supposed to pass the form values to the booking form and values are passed through POST and forwarded to checkout page
but on the checkout page i have an edit form button,when edit button is clicked the values are not restored on the booking page again the code for the index.php form is

<div class="Required">
    <p>Price:
        <div class="price-input" style="width:297px;">
            <span style=" background-color:#FFFFFF;color: #2B2B2B;float: left;font-family: Arial,Helvetica,sans-serif;font-size: 13px;font-weight: bold;line-height: 20px;text-align: right;width: 115px;">&pound;&nbsp;</span>
            <span id="priceload">0</span>
        </div>
    </p>
    <div id="bottom-both-button">
        <input type="submit" class="book-button3" value="" style="margin-left:120px; margin-top:10px;" />
        <div class="skips-repeat-check">
            <p>Price:</p>
            <label>£ <?php if($amount=='') { echo $calculatedprice; } else { echo $amount; } ?></label>
        </div>
    </div>

the code for the booking page is

<div class="skips-repeat">
    <p>Price:</p>
    <div class="price-input">
        <p style="background:none;">£ 
            <span id="priceload"> <?php echo $_POST['calculatedprice']; ?></span>
        </p>
        <?php $calculatedprice = $_POST['calculatedprice'];?>
        <!--input type="hidden" name="calculatedprice" value="<?php echo $calculatedprice; ?>" /-->
    </div>
   <span></span>
</div>

the code for the checkout page is

$_SESSION['calculatedprice'] = $_POST['calculatedprice'];
<div class="skips-repeat-check">
    <p>Price:</p>
    <label>£ <?php if($amount=='') { echo $calculatedprice; } else { echo $amount; } ?></label>
</div>

how would i be able to reatin the values back to the booking form?