卖 is a simplified Chinese hanzi, listed here under the keyword “sell”. It is built from 十 (ten) and 买 (buy). It appears as a component in 10 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “ten” + “buy”. 卖 is among the results, together with every other character containing the same shapes.
Open 卖 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.