Ebay is the place to go for one of those. You can get one for as cheap as $ 5.99. There are tons of others that are similar models to the ones already posted here for around $15.
Below is the link ..
https://www.ebay.com/itm/5kg-1g-40kg-10g-Digital-Electronic-Kitchen-Food-Diet-Postal-Scale-Weight-Balance/172876494440?hash=item28403df668:m:mfsqegDvN_mm3xsNNz2PEtg
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