How to list Websites's Amounts for a product | Magento 1.x

im trying to use magento 1.x REST API and retrive product. each product has a prices ( attribute called "amount" ) and it can configure for each website different websites shows different set of prices for each product. enter image description here

i tried to use

 $collection = Mage::getResourceModel('catalog/product_collection')

                    // we iterate through the list of products to get attribute values

                    foreach ($collection as $product) {

                        array_push($products , $this->formatProductListing($product,$store));

private function formatProductListing($product,$currentStore){

    $responseProduct = array();
    $responseProduct['entity_id']           = $product->_data["entity_id"];
    $responseProduct['category_ids']        = $product->_data["category_ids"];
    $responseProduct['name']                = $product->getName();
    $responseProduct['sku']                 = $product->getSku();
    $responseProduct['description']         = $product->getDescription();
    $responseProduct['image_url']           = $product->getImageUrl();
    $responseProduct['price']               = $product->getFinalPrice();
    $responseProduct['minimum_price']       = $product->getMinimalPrice();

    $responseProduct['currency_code']   = Mage::app()->getStore($currentStore)->getCurrentCurrencyCode();
    $currency                           = Mage::app()->getLocale()->currency($responseProduct['currency_code']);
    $responseProduct['currency_symbol'] = $currency->getSymbol();
    $responseProduct['currency_name']   = $currency->getName();
    $responseProduct['store_code']      = $currentStore->getCode();

    $responseProduct['status']          = $product->_data["status"];

    return $responseProduct;

but it either collection or product doest has the amounts. i need add all amounts as a array like a " price : [100, 2500,5000 ...] to the store germany "