i have a deep love for the Asteron Belt. The special is reduced and not a lot of great use from it, though when grouped and frozen it can function it is not viable due to missing at kissing range. However, the normal and hard attacks with this are golden goodness.
Value it roughly around 6-9 pd and possibly more to the right buyer.
~20pds is a good amount to sell it for. It's the best partisan for a FOmar. You might not see it as often because there aren't that many FOmars plus almost all the other classes have easier-to-get/better partisans like charge gungnir, parasols or s-rank scythes etc.