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.
$3.00
5 new
from $2.38
as of November 14, 2019 4:05 am
Amazon.com
Ebay.com
€2.28
1 new
from €2.28
as of November 14, 2019 4:05 am
Amazon.es
£2.23
2 new
from £2.23
as of November 14, 2019 4:05 am
Amazon.co.uk
€2.87
3 new
from €2.87
as of November 14, 2019 4:05 am
Amazon.de