Yes in
skin1/customers/main/product.tpl on line
143:
Replace:
Code:
<select id="product_avail" name="amount"{if $active_modules.Product_Options ne '' && $product_options ne ''} onchange="check_wholesale(this.value);"{/if}>
{section name=quantity loop=$mq start=$start_quantity}
<option value="{%quantity.index%}"{if $smarty.get.quantity eq %quantity.index%} selected="selected"{/if}>{%quantity.index%}</option>
{/section}
</select>
With:
Code:
<input type="text" name="amount" size="4" maxlength="3" value="{$product.min_amount}" />