import re, ast, html
s = r"""{'price': '<script type="text/javascript">document.write;icon_top_2_iphone"></span>Безопасная сделка</a> 10&nbsp;000&nbsp;₽ </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() )