Banggood.com
Scroll down the page to compare the IR Receiver price at different stores. TSOP4838 – IR Receiver module that operates at frequency of 38KHz. You can supply voltage between 2.7V and 5.5V.
$1.74
5 new
from $1.74
as of January 19, 2020 10:52 pm
Amazon.com
Ebay.com
€2.34
1 new
from €2.34
as of January 19, 2020 10:52 pm
Amazon.es
£2.27
2 new
from £2.27
as of January 19, 2020 10:52 pm
Amazon.co.uk
€3.05
2 new
from €3.05
as of January 19, 2020 10:52 pm
Amazon.de