Notice for object conversion - php

Question

I'm doing a search engine for eBay-API, though I can't figure out what I'm doing wrong here, I get the error of:
Notice: Trying to get property of non-object in D:\xamp\htdocs\webapp\queries.php on line 431
Line 431 is:
if ($darkarteli->Item->SellingStatus->CurrentPrice <= 10 && $darkarteli->Item->SellingStatus->CurrentPrice >= 25 && $darkarteli->ListingType == 'FixedPriceItem')
Full code snippet:
foreach ($temparrrayforproducts as $darkartelis){
global $itemidsfromgetsellerlist;
$nd=[];
array_push($nd, $darkartelis->ItemArray);
foreach($nd as $darkartelis->Item){
if ($darkarteli->Item->SellingStatus->CurrentPrice <= 10 && $darkarteli->Item->SellingStatus->CurrentPrice >= 25 && $darkarteli->ListingType == 'FixedPriceItem'){
array_push($itemidsfromgetsellerlist, $darkarteli->Item->ItemID);
}
}
}
var_dump ($itemidsfromgetsellerlist);
Beautified var_dump() for $darkartelis: https://pastebin.com/xi34Vzn7
EDIT: I tried this code and it doesn't give out any errors, but it doesn't pass through the if statement even though there are 10-25 priced items which are fixedpriceitems also
foreach($temparrrayforproducts as $ndd){//pro kiekviena getsellerlist
global $itemidsfromgetsellerlist;
$nd=[];
array_push($nd, $ndd->ItemArray->Item); // tada per get seller list item arr
foreach($nd as $k=>$nds){ // per kiekviena itema
if (is_object($nds)&&!empty($nds)){
if ($nds->SellingStatus->CurrentPrice <= 10.00 && $nds->SellingStatus->CurrentPrice >= 25.00 && $nds->ListingType == 'FixedPriceItem'){
echo "Hallelujah";
array_push($itemidsfromgetsellerlist, $nds->ItemID);
}
}
}
}