import re, ast, html
s = r"""{'price': '<script type="text/javascript">document.write;icon_top_2_iphone"></span>Безопасная сделка</a> 10 000 ₽ </div>\');</script'}"""
d = ast.literal_eval(s)
m = re.search(r'(?<!\d)\d{1,3}(?:\xA0\d{3})*\s*₽', html.unescape(d["price"]))
if m:
print( m.group() )
aW1wb3J0IHJlLCBhc3QsIGh0bWwKcyA9IHIiIiJ7J3ByaWNlJzogJzxzY3JpcHQgdHlwZT0idGV4dC9qYXZhc2NyaXB0Ij5kb2N1bWVudC53cml0ZTtpY29uX3RvcF8yX2lwaG9uZSI+PC9zcGFuPtCR0LXQt9C+0L/QsNGB0L3QsNGPINGB0LTQtdC70LrQsDwvYT4gMTAmbmJzcDswMDAmbmJzcDvigr0gPC9kaXY+XCcpOzwvc2NyaXB0J30iIiIKZCA9IGFzdC5saXRlcmFsX2V2YWwocykKbSA9IHJlLnNlYXJjaChyJyg/PCFcZClcZHsxLDN9KD86XHhBMFxkezN9KSpccyrigr0nLCBodG1sLnVuZXNjYXBlKGRbInByaWNlIl0pKQppZiBtOgogICAgcHJpbnQoIG0uZ3JvdXAoKSAp